# Math

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Hello! I am needing some help on Algebra! It is hard !
Can you explain how to Simplify Algebraic Expressions? The easiest way? I have a test over it Friday, and i can't understand it at all!
Can you help with these and explain?
-12z+4(z-9)+30+z
and
4(y-3)+9-3y

• Math -

-12z+4(z-9)+30+z

Combine like terms.

-12z + 4z - 36 + 30 + z

-7z - 6

• Math -

4(y-3)+9-3y

I come out and get

4y-12+9-3y

What do I do now? I'm so confused! I don't know it !:(

• Math -

Now combine like terms.

4y-12+9-3y

4y - 3y = y
9 - 12 = -3

4y-12+9-3y = y - 3

• Math -

Now how would I do this? This is so confusing.

LUNCH You bought 3 pieces of chicken that cost x dollars each, a salad for \$3, and a drink for \$1.

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