Answer:
Step-by-step explanation:
Ok. In order to answer this question, there are multiple ways in which we can approach this. The way I am going to do is substitution. Isolate the y in the second equation which gives you y=7+3x.
Now what you want to do is to plug in that equation into the first one.
-3x+3(7+3x)=-9.
-3x+21+9x=-9
6x=-30
x=-5,
Ok, now you need to solve the y variable.
So plug in the x variable into the second equation and solve for y.
y=-8
