Math
Solve for both systems: 8x+5y=23 and 7x + 8y = 31
![](https://d22o6al7s0pvzr.cloudfront.net/images/bookrags/qa/avatars/.defaults/unknown.png)
Asked by
AnneS2
Last updated by
anonymous
8x+5y=23
8x-8x+5y=23-8x
5y=23-8x
5y/5=23-8x/5
y=4.6-1.6x
7x + 8y = 31
7x + 8(4.6-1.6x) = 31
7x + 8(4.6) (8)(-1.6x) = 31
7x + 36.8-12.8x= 31
36.8-5.8x= 31
36.8-5.8x-36.8= 31-36.8
-5.8x=-5.8
-5.8x/-5.8=-5.8/-5.8
x=1
y=4.6-1.6x
y=4.6-1.6(1)
y=4.6-1.6=3