simplify into an expression

Question

3(1−3x)−(2+x)

Answer 1

Hello, Kaylee,

You should be familiar with the order of operations, sometimes referred to as PEMDAS. It outlines the order of operations in an expression. Do them in this order.

1. P: Parentheses
2. E: Exponents
3. MD: Multiplication and division, left to right
4. AS: Addition and subtraction (left to right)

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Apply these steps to your problem:

3(1−3x)−(2+x)

3 - 9x -2 - x

1 -10x

There was nothing more to be done within the parentheses, nor are there exponents. The third step is multiplying the "3" and the "-1" times the values in the parentheses, to yield the second line. Then just add/subtract the like terms (combine them).

Bob