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Try some problems on your own:
 Click on the appropriate oval to pick an
answer, then click Continue.
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Column A |
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Column B |
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b+c |
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0 |
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Column A is greater
Column B is greater
The columns are equal
The relationship cannot be determined
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This is a good combination problem if you look for a shortcut.
Start by putting both equations in similar forms:
Now, combine the two equations:
Adding them together, we find an exact amount for
b+c. You could try multiplying the two equations to make
one of the variables drop out, but notice that all you need to know for
this problem is the quantity b+c — which we already have.
b+c = –1
which is less than 0, so the second choice, Column B, is the greater
amount and the correct answer.
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