how to simplify expressions

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iim in 8th grade on simplifying expressions and i dont know how to do the problems like 4b-7-15bplus3 any helpn

Sep 11th, 2015

Thank you for the opportunity to help you with your question! Hope your day is going well!

The goal is to combine like terms. You want to put all the variables (the letters), and all the constants (the numbers without any letters) together.

4b-7-15b+3

Let's rearrange it

4b-15b-7+3

Since we put like terms together, you simply do the addition of the subtraction.

-11b-4

This is the final answer. 

Please let me know if you need any clarification. I'm always happy to answer your questions. Leave a positive review if you are happy!
Sep 11th, 2015

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