First, let's simplify the second equation:
-6 + 2y = -10
Add 6 to both sides:
2y = -4
Divide by 2:
y = -2
Now we can substitute y = -2 into the first equation and solve for x:
3x + 3*(-2) = 9
3x - 6 = 9
Add 6 to both sides:
3x = 15
Divide by 3:
x = 5
So the solution to the system of equations is x = 5, y = -2.
solve the system of equations by elimination
3x + 3y = 9
-6 + 2y = -10
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