Answer:
x=1 y=2
(1,2)
Step-by-step explanation:
3x + 2y = 7
x - y + 1 = 0
Multiply the second equation by 2 so we can eliminate y
2(x - y + 1 )= 0*2
2x-2y+2 =0
Add this to the first equation
3x + 2y = 7
2x -2y +2 =0
--------------------------
5x +2 = 7
Subtract 2 from each side
5x+2-2=7-2
5x =5
Divide each side by 5
5x/5 =5/5
x=1
Now substitute into the second equation to find y
x - y + 1 = 0
1-y+1 =0
2-y =0
Add y to each side
2-y+y=0+y
2=y
