SOLUTION: how do I work this problem? solve by the substitution method 6x+5y+18 x=28-5y

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Question 320346: how do I work this problem?
solve by the substitution method
6x+5y+18
x=28-5y
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Check your first equation.
There is no "=" sign.
I'm assuming it's 6x%2B5y=18
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.
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1.6x%2B5y=18
2.x=28-5y
Substitute eq. 2 directly into eq. 1,
6%2828-5y%29%2B5y=18
168-30y%2B5y=18
-25y=-150
highlight%28+y=6%29
Then from eq. 2,
x=28-5%286%29
x=28-30
highlight%28+x=-2%29