−86.4 + 16.38.
21 answers
The sum of -86.4 and 16.38 is -70.02.
7.4 − (−3.7)
The subtraction of 7.4 and -3.7 is 11.1.
−6 4/9− 1 1/3
To subtract -6 4/9 and -1 1/3, we need to convert these mixed numbers to improper fractions first.
-6 4/9 can be written as -54/9 + 4/9 = -58/9.
-1 1/3 can be written as -3/3 + 1/3 = -4/3.
Now, we can subtract the fractions:
-58/9 - (-4/3) = -58/9 + 4/3.
To add or subtract fractions, we need to have a common denominator. In this case, the common denominator is 9 * 3 = 27.
So, the expression becomes:
(-58/9) * (3/3) + (4/3) * (9/9) = -174/27 + 36/27
Subtracting the fractions:
-174/27 + 36/27 = -138/27
Therefore, -6 4/9 - 1 1/3 = -138/27.
-6 4/9 can be written as -54/9 + 4/9 = -58/9.
-1 1/3 can be written as -3/3 + 1/3 = -4/3.
Now, we can subtract the fractions:
-58/9 - (-4/3) = -58/9 + 4/3.
To add or subtract fractions, we need to have a common denominator. In this case, the common denominator is 9 * 3 = 27.
So, the expression becomes:
(-58/9) * (3/3) + (4/3) * (9/9) = -174/27 + 36/27
Subtracting the fractions:
-174/27 + 36/27 = -138/27
Therefore, -6 4/9 - 1 1/3 = -138/27.
what s that as a mixed number
To convert -138/27 to a mixed number, we divide the numerator (-138) by the denominator (27).
-138 ÷ 27 = -5 remainder 3
The whole number part is -5, and the remainder 3 becomes the numerator of the fractional part. The denominator remains the same.
Therefore, -138/27 as a mixed number is -5 3/27, which can be simplified to -5 1/9.
-138 ÷ 27 = -5 remainder 3
The whole number part is -5, and the remainder 3 becomes the numerator of the fractional part. The denominator remains the same.
Therefore, -138/27 as a mixed number is -5 3/27, which can be simplified to -5 1/9.
75.5 − 32.55
The difference between 75.5 and 32.55 is 42.95.
7.829 − 3.21
The difference between 7.829 and 3.21 is 4.619.
which 3 are correct
A 152 − 200 = −48152 − 200 = −48
B −25 + (−25) = 0−25 + (−25) = 0
C 89 − (−17) = 10689 − (−17) = 106
D 134 − (−16) = 118134 − (−16) = 118
E −39 − (−28) = −11
A 152 − 200 = −48152 − 200 = −48
B −25 + (−25) = 0−25 + (−25) = 0
C 89 − (−17) = 10689 − (−17) = 106
D 134 − (−16) = 118134 − (−16) = 118
E −39 − (−28) = −11
The correct statements are:
C 89 − (−17) = 106
D 134 − (−16) = 118
E −39 − (−28) = −11
C 89 − (−17) = 106
D 134 − (−16) = 118
E −39 − (−28) = −11
425.82 − (−120.75)
To find the difference between 425.82 and -120.75, we need to subtract -120.75 from 425.82.
Subtracting a negative number is the same as adding the positive number. Therefore,
425.82 - (-120.75) = 425.82 + 120.75
Adding these numbers, we get:
= 546.57
So, 425.82 − (−120.75) is equal to 546.57.
Subtracting a negative number is the same as adding the positive number. Therefore,
425.82 - (-120.75) = 425.82 + 120.75
Adding these numbers, we get:
= 546.57
So, 425.82 − (−120.75) is equal to 546.57.
-17.03 + (-17.204)?
To find the sum of -17.03 and -17.204, we add these two numbers:
-17.03 + (-17.204) = -34.234
Therefore, the sum of -17.03 and -17.204 is -34.234.
-17.03 + (-17.204) = -34.234
Therefore, the sum of -17.03 and -17.204 is -34.234.
4−1 1/4+1/2
To solve the expression 4 - 1 1/4 + 1/2, we need to first convert the mixed number 1 1/4 into an improper fraction.
1 1/4 can be written as (4 * 1 + 1) / 4 = 5/4.
Now, we can substitute the values into the expression and solve:
4 - 5/4 + 1/2
To add or subtract fractions, we need to have a common denominator. In this case, the common denominator is 4 * 2 = 8.
So, we can rewrite the expression with the common denominator:
(4 * 8) / 8 - (5/4) * (2/2) + (1 * 4) / 8
= 32/8 - 10/8 + 4/8
= (32 - 10 + 4) / 8
= 26/8
= 13/4
Therefore, 4 - 1 1/4 + 1/2 is equal to 13/4 or simplifying it further, 3 1/4.
1 1/4 can be written as (4 * 1 + 1) / 4 = 5/4.
Now, we can substitute the values into the expression and solve:
4 - 5/4 + 1/2
To add or subtract fractions, we need to have a common denominator. In this case, the common denominator is 4 * 2 = 8.
So, we can rewrite the expression with the common denominator:
(4 * 8) / 8 - (5/4) * (2/2) + (1 * 4) / 8
= 32/8 - 10/8 + 4/8
= (32 - 10 + 4) / 8
= 26/8
= 13/4
Therefore, 4 - 1 1/4 + 1/2 is equal to 13/4 or simplifying it further, 3 1/4.
−3/2 + 8/5
To add -3/2 and 8/5, we need to have a common denominator. In this case, the common denominator is 2 * 5 = 10.
So, we rewrite the fractions with a common denominator:
(-3/2) * (5/5) + (8/5) * (2/2)
= -15/10 + 16/10
Now, we can add the fractions:
(-15 + 16) / 10
= 1/10
Therefore, -3/2 + 8/5 equals 1/10.
So, we rewrite the fractions with a common denominator:
(-3/2) * (5/5) + (8/5) * (2/2)
= -15/10 + 16/10
Now, we can add the fractions:
(-15 + 16) / 10
= 1/10
Therefore, -3/2 + 8/5 equals 1/10.