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July 24, 2014

Homework Help: 7th grade math

Posted by Delilah on Friday, December 7, 2012 at 8:13pm.

Simplify each expression.

1.
2z - 3y - 8z + y

2.
9 - 7t + 1 + 4t

3. For the summer, Tia buys 3 T-shirts and 2 pairs of shorts. Her brother buys 4 T-shirts and 1 pair of shorts. Define and use variables to represent the total cost.

I have no idea how to do this! Please help!

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