Question

Find the solution for the system of linear equations by elimination:

x + y = -12
2x + y = 3

Answer 1

Explanation:

x+y=-12 eq(1)

2x+y=3 eq(2)

subtract eq 2 from 1

x-2x+y-y=-12-3

-x= -15 now y is eliminated

x=15

for y put x=15 in eq(1)

15+y=-12

y=-12-15

y=-27

for checking of answer

x+y=-12

15-27=-12

-12=-12