Question

Solve each system of equations by adding, subtracting, or multiplying.

2) x + y = 12
2x + y = 6

PLEASE SHOW WORK!

Answer 1

x + y = 12
2x + y = 6

x = 12 -y
2x + y = 6

x = 12 -y
2(12 -y) + y =6

x = 12 -y
24 -2y  + y =6

x = 12 -y
-2y + y = 6 -24 

x = 12 -y
-y = -18

x = 12 - 18
y = 18

x = -6
y=18