SOLUTION: Solve by the substitution method 15x-20y=-1 10y=1+5x

SOLUTION: Solve by the substitution method 15x-20y=-1 10y=1+5x

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Question 583424: Solve by the substitution method
15x-20y=-1
10y=1+5x
Answer by unlockmath(1688) (Show Source): You can put this solution on YOUR website!
Hello,
Let's solve this by getting the second equation to equal x as follows:
15x-20y=-1
2y-1/5=x
Now substitute:
15(2y-1/5)-20y=-1
Rewritten as:
30y-3-20y=-1
Combine like terms and add3:
10y=2
y=1/5
Plug that into the first equation to get:
x=1/5
Make sense?
RJ
www.math-unlock.com
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