Let x = one number and x+7 the other.
x + x + 7 = 31
Solve for x, then x+7.
the sum of two numbers is 31 and their difference is 7 what are the two numbers?
32 answers
a = first number
b = second number
You have conditions:
a + b = 31 and a - b = 7
Add the two equations together to eliminate b from the system.
a + b = 31
+
a - b = 7
________
a + a + b + ( - b ) = 31 + 7
2 a + b - b = 38
2 a + 0 = 38
2 a = 38 Divide both sides by 2
a = 38 / 2 = 19
a - b = 7
19 - b = 7 Add b to both sides
19 - b + b = 7 + b
19 = 7 + b Subtract 7 to both sides
19 - 7 = 7 + b - 7
12 = b
b = 12
Proof:
a + b = 19 + 12 = 31
a - b = 19 - 12 = 7
b = second number
You have conditions:
a + b = 31 and a - b = 7
Add the two equations together to eliminate b from the system.
a + b = 31
+
a - b = 7
________
a + a + b + ( - b ) = 31 + 7
2 a + b - b = 38
2 a + 0 = 38
2 a = 38 Divide both sides by 2
a = 38 / 2 = 19
a - b = 7
19 - b = 7 Add b to both sides
19 - b + b = 7 + b
19 = 7 + b Subtract 7 to both sides
19 - 7 = 7 + b - 7
12 = b
b = 12
Proof:
a + b = 19 + 12 = 31
a - b = 19 - 12 = 7
the key answer of this question the sum of two numbers is 31 and their difference is 7
OOOKKKAAAYYY AND?!
i am confusions
This doesn't make no sense. This is wack.
wat
its 19 and 12
its 19 and 12 cuz 12 7 numbers behind 19 12+7=19 so its 12 and 7
sorry its 12 and 19 not 12 and 7
It is 19 and 12
This is such confusion.
its 12 and 19
What is the point of this
Um...OK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
confused.
What’s the answer!
12 and 19
woooooooooooooooooooooooooooot?!!?!?!?!?!?!?!?!?!?!?!?!?
If you cauculate, the answer is 12 + 19 = 31
19 - 12 =7
So whoever answer 19 and 12, you are correct!!!!!!!
19 - 12 =7
So whoever answer 19 and 12, you are correct!!!!!!!
Also, what's the two numbers that sum up to 134, and it's the difference of 66?
that helped me
12 and 19 is the answer
This is... :l
ha ha ha ha ha ha ha 19 and 12 (haaaaaaaaaaaaa)
19 and 12
This is confusing... :'>
Wsp the answer is 19 and 12
There is know need to fight between each other BECAUSE IT IS ALL MIneeeeeeeeeeeeee !🎯🎵🎵🎵🎵🎵🎵🎵🎵
What are the two numbers
Lamo?
got it