SOLUTION: Hi Everybody! I've been out of school for 23 years and even when I was there I was never any good at this stuff. Any help would be Appreciated. Here's the problem: 2[-7y-3(5-4y

Question 171600: Hi Everybody! I've been out of school for 23 years and even when I was there I was never any good at this stuff. Any help would be Appreciated.
Here's the problem:
2[-7y-3(5-4y)+10]=10y-12
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
2[-7y-3(5-4y)+10]=10y-12
Divide both sides by 2 to get:
[-7y-3(5-4y)+10] = 5y - 6
[-7y -15 + 12y + 10] = 5y -6
5y -5 = 5y -6
If you subtract 5y from both sides you get this contradiction:
-5 = -6
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The equation is "inconsistent" and has no solution.
The thing that was inconsistent was all those "y's".
You thought they all meant the same number; they don't.
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Welcome back to the land of the learning.
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Cheers,
Stan H.
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