Question

-2/3x-7y=6
x+3y=-9
solve by substitution

Answer 1

y = 0; x = -9

Explanation:

In order to have a variable to substitute, we can isolate x by subtracting 3y from both sides, which gives us x = -3y - 9

Thus, by plugging in this x into the first equation, we have:

`-2/3(-3y-9)-7y=6\\2y+6-7y=6\\-5y+6=6\\-5y=0\\y=0\\\\x+3(0)=-9\\x=-9`