SOLUTION: I need help with step by step elimination method solving for x,y. y=-4 -3x-6y=15

SOLUTION: I need help with step by step elimination method solving for x,y. y=-4 -3x-6y=15

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Question 863483: I need help with step by step elimination method solving for x,y.
y=-4
-3x-6y=15
Answer by ben720(159) (Show Source): You can put this solution on YOUR website!
Because y=-4, you can substitute -4 for y in the second equation:

Multiply

Subtract 24 from both sides

Divide both sides by -3

x=3

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