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Example 2.11 from Prealgebra, 2.1 Use the Language of Algebra
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
| Are there any parentheses (or other grouping symbol)? Yes. | |
| Focus on the parentheses that are inside the brackets. | |
| Subtract. | |
| Continue inside the brackets and multiply. | |
| Continue inside the brackets and subtract. | |
| The expression inside the brackets requires no further simplification. | |
| Are there any exponents? Yes. | |
| Simplify exponents. | |
| Is there any multiplication or division? Yes. | |
| Multiply. | |
| Is there any addition or subtraction? Yes. | |
| Add. | |
| Add. | |
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Simplify:
How did it go?