simplify expressions containing parentheses

mtv128

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Feb 19, 2009
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Hey all, I just picked up my son's homework and he wasn't in class to be shown or explained to him how to do these types of problems. He does not know how to do the solutions in parentheses. Its a 42 question work sheet. Can someone explain a few of these problems?
1. 3x + 2 (5x - 7)
2. k + 1 - 4 (2k - 9)
3. 3 (- u - 5) + 8 (2u + 1)
4. - 10k - 3 + 2 (5 + 6k)

Thanks!!
 
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