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Example 1.28 from Elementary Algebra, 1.2 Use the Language of Algebra
The length of a rectangle is 6 less than the width. Let w represent the width of the rectangle. Write an expression for the length of the rectangle.
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.
| Write a phrase about the length of the rectangle. | 6 less than the width |
| Substitute for "the width." | 6 less than |
| Rewrite "less than" as "subtracted from." | 6 subtracted from |
| Translate the phrase into algebra. |
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
The length of a rectangle is 7 less than the width. Let w represent the width of the rectangle. Write an expression for the length of the rectangle.
How did it go?