Question

http://prntscr.com/9atj8r

Answer 1

there are two ways to solve it.
substitution or elimination.
do you have a preference?

Answer 2

Substitution

Answer 3

but i think substitution would be easier.

2x+3y= -6
x-y=4

Answer 4

you can start by adding y to both sides in the second equation

and you'll get ... ?

Answer 5

How do you add both sides?

Answer 6

since -y+y=0