Question

Solve the system of equations

−
4
x
+
2
y
=
−
30
−4x+2y=−30 and
−
2
x
+
2
y
=
−
10
−2x+2y=−10 by combining the equations.

Answer 1

Explanation:

-4x + 2y = -30

-2x + 2y = -10

-4x + 2y = -30

2x - 2y = 10

-2x = -20

x = 10

-2(10) + 2y = -10

-20 + 2y = -10

2y = 10

y = 5

(10, 5)