SOLUTION: I need help on solving systems of equations using substitution. Here's the Question: y=2x + 7 y= -3x - 18

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Question 684663: I need help on solving systems of equations using substitution.
Here's the Question:
y=2x + 7
y= -3x - 18
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Take either equation and plug it in for y
y = 2x + 7
y = -3x -18
...
2x + 7 = -3x - 18
2x + 3x = -18 - 7
5x = -25
x = -5
...
y = 2(-5) + 7 = -10 + 7 = -3
...
(-5, -3) is the solution or point of intersection
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