Answer:
x=1 , y=6
Step-by-step explanation:
7x+3y = 25
-2x-y = -8
Multiply the second equation by 3 so we can eliminate y
3(-2x-y )= -8*3
-6x -3y = -24
Add this equation to the first equation
-6x -3y = -24
7x+3y = 25
----------------------
x = 1
But we still need to find y by substituting x =1
-2x -y = -8
-2(1) -y = -8
-2-y = -8
Add 2 to each side
-2+2 = -8+2
-y = -6
Multiply by -1
y = 6
