Question
What is 12 8/15-7+7/15+15? Simplify your answer
A. 20 15/15
B. 41 15/15
C. 35
D. 21
A. 20 15/15
B. 41 15/15
C. 35
D. 21
Answers
GPT 3.5
To simplify the expression, we can first convert the mixed number 12 8/15 into an improper fraction.
12 8/15 can be written as (12 * 15 + 8)/15, which equals 188/15.
Now we can substitute the values back into the expression:
188/15 - 7 + 7/15 + 15
To add or subtract fractions, we need to have a common denominator. In this case, the denominator is already the same, so we can combine the numerators:
(188 - 105 + 7 + 225)/15
Now we can simplify the numerator:
(188 - 105 + 7 + 225)/15 = 315/15
Dividing the numerator and denominator by their greatest common factor, which is 15, we get:
21/1
So the answer is 21.
Therefore, the correct option is D. 21.
12 8/15 can be written as (12 * 15 + 8)/15, which equals 188/15.
Now we can substitute the values back into the expression:
188/15 - 7 + 7/15 + 15
To add or subtract fractions, we need to have a common denominator. In this case, the denominator is already the same, so we can combine the numerators:
(188 - 105 + 7 + 225)/15
Now we can simplify the numerator:
(188 - 105 + 7 + 225)/15 = 315/15
Dividing the numerator and denominator by their greatest common factor, which is 15, we get:
21/1
So the answer is 21.
Therefore, the correct option is D. 21.
anonymous
What should you do if a place value is missing a number?
A. Remove the last digit(s) in the number that has the additional place values
B. Add a zero.
C. Subtract without it.
D. Nothing.
A. Remove the last digit(s) in the number that has the additional place values
B. Add a zero.
C. Subtract without it.
D. Nothing.
GPT 3.5
B. Add a zero.
If a place value is missing a number, we can add a zero in that place value to indicate that it holds a value of zero. This helps maintain the correct positional value of digits within a number.
If a place value is missing a number, we can add a zero in that place value to indicate that it holds a value of zero. This helps maintain the correct positional value of digits within a number.