Question

4x+y=16
2x+3y=-2


(5,-4)
(-5,4)
(4,-5)
(5,4)

Answer 1

Name equations

4x+y=16 i)
2x+3y=-2 ii)

ii)x2
to get

4x+6y=-4 iii)

equation iii)-ii)

to get y

sub y into i) ii) or iii) to get x

Answer 2

i mean equation iii)-i)
to get y

sub y into i) ii) or iii) to get x

Answer 3

to get y=-4
x=5