Question

Solve the system of equations by the substitution method.
2x - y = 20
6x + 5y = 44

Answer 1

x=9 y=2

isolate x for x=20+y/2
6•20+y/2 + 5y=44
simplify
8y+60=44 then isolate y for 8y+60=44
20+y/2 y=-2 so sub y for -2
x=20-2/2=9
x=9 , y=-2