Question: Math

Solve for both systems - 4x - y = 31 and - 2x - y = 15

In Math | Asked by AnneS2
Answers
- 2x - y = 15

- 2x - y +y= 15+y
-2x= 15+y
-2x-15= 15+y-15
-2x-15=y
 - 4x - y = 31 
 - 4x - (-2x-15) = 31 
 - 4x +2x+15 = 31 
-2x+15=31
-2x+15-15=31-15
-2x=16
-2x/-2=16/-2
x=-8
-2x-15=y
-2(-8)-15=y
16-15=y
1=y

CherieS | 368 days ago