Question

solve the system using substitution
5y-x=-5
7y-x=-23

Answer 1

@Nnesha @SolomonZelman

Answer 2

5y-x=-5
x=5+5y

7y-(5+5y)= -23
7y-5y-5= -23
2y-5=-23
2y=-28
y=-14

x=5+5y
x=5 + 5(-14)
x= 5 - 70
x = -65

Proof:
5y-x=-5
5(-14) -(-65)=-5
-70+65= -5
-5 = -5
True

Answer 3

thanks so much :)