Question

What is the solution of the following system?
3x + 3y = 10
-9x - 9y = -30

Answer 1

0 = -20
-
The answer is no solution.

Answer 2

3x+3y=10

Step 1: Add -3y to both sides.
3x+3y+−3y=10+−3y
3x=−3y+10
Step 2: Divide both sides by 3.
3x3=−3y+103
x=−y+103
_____________________________________________

−9x−9y=−30

Step 1: Add 9y to both sides.
−9x−9y+9y=−30+9y
−9x=9y−30
Step 2: Divide both sides by -9.
−9x−9=9y−30−9
x=−y+103___________________________
The answers are in bold!
~Good Luck~