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!

4 answers

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

Combine like terms:

2z - 8z - 3y + y

-6z - 2y

Do the second problem the same way.

3. This problem isn't clear. Do we assume that all T-shirts cost the same? Do all shorts cost the same? Please clarify. You may need to ask your teacher about this one.

so is:
#2.
10 - 3t

Yay! You're right! :-)

Just thumb me up guys :)