Question

what is the solution of equations 2x+y=-2; 3x-y=7​

Answer 1

Step-by-step explanation:

2x+y=-2

2x+y+2=0

3x-y=7

3x-y-7=0

2x+y+2=3x-y-7

2x-3x=-7-2

-x=-9

x= -(-9)

x=9