Question

Solve the system of equations. The solution is 4x + 4y = -28 and 6x - 4y = -2

Answer 1

Explanation:

4x + 4y =-28

6x - 4y = -2 4y is the same in both equations so we add them

=> 10x= -30

x=-30/10

x=-3

sub x into any equation

4(-3) +4y =-28

-12 +4y = -28

4y = -28 + 12

4y = -16

y= -16/4

y= -4

check

4(-3) + 4 (-4) = -28 therefore, x=-3 and y=-4

-12 -16 = -28

-28 = -28