Kaycie V. answered • 05/21/19
Experienced Math, Science, Test Prep, Career Counseling Tutor
Here we have a system of equations where we need two separate values: x, y. Sum means addition, and difference means subtraction.
- x + y = 17
- x - y = 5
We can use elimination, which requires adding the two equations together to cancel "opposites"
-y and y are opposites so they "cancel out"
x + x = 17 + 5 --> 2x=22
Divide by 2 on both sides
x = 11
To find the value of y, substitute the value of x into either equation from the beginning of the problem
x + y = 17
11 + y = 17
-11 -11
y= 6
Check: x + y = 17 --> 11 + 6 = 17
x-y= 5 --> 11-6 = 5
Real K.
wat is the answer?12/08/20
Lucy M.
11 and 612/16/20
Kaylynn H.
i still don't know that answers to the thing02/03/21
Carter R.
what is the answer!?02/06/21
Skylar Y.
" 11 and 6" I always use this when I go to prodigy. https://play.prodigygame.com/03/13/21
Bella R.
what is the answer03/26/21
Pizza Lord K.
11and 6 its 2 numbers they ADD to make 17 and SUBTRACT to make 5 and me too Sklar!!04/12/21
Johnathan K.
whats the answer?05/03/21
Evelyn E.
Thanks alot ma'am i appriciate you're work to answer my question!05/21/19