Question

Solve the system of equations
x+y=1 and 6x-2y=-26 by combining the equations.

Answer 1

x+y=1

6x-2y= 26

-6(x+y=1)

6x-2y= 26

-6x-6y=-6

6x-2y=26

-8y=20

y=-20/8=-5/2

x+y=1

x-5/2=1

x=1+5/2

x=(2+5)/2=7/2

S{7/2;-5/2}

Explanation: