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Subtract Linear Expressions Section 5.7

Subtract Linear Expressions Section 5.7. Subtract Linear Expressions. When subtracting linear expressions, subtract like terms. What are like terms? Use zero pairs if needed Remember to Keep, Change, Change. Examples. 1. (5x - 9) – (2x - 7) 2. (6x - 10) – (2x - 8).

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Subtract Linear Expressions Section 5.7

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  1. Subtract Linear ExpressionsSection 5.7

  2. Subtract Linear Expressions • When subtracting linear expressions, subtract like terms. • What are like terms? • Use zero pairs if needed • Remember to Keep, Change, Change

  3. Examples • 1. (5x - 9) – (2x - 7) • 2. (6x - 10) – (2x - 8)

  4. Use the Additive Inverse to Subtract • When subtracting integers, add the opposite or the __________ inverse. • The same process is used when subtracting linear expressions

  5. Examples • 3. (4x - 3) – (2x + 7) • 4. (5x - 4) – (2x + 3)

  6. You Try • 5. (2x + 4) – (-x + 5) • 6. (6x + 9) – (7x - 1)

  7. Word Problem • 5. The number of runs scored by the home team at a baseball game is represented by (x + 7). The number of runs scored by the visiting team is represented by (3x - 7). Write an expression to find out how many more runs he home team scored than the visiting team. Then evaluate the expression if the value of x is 6.

  8. Essential Question • How can you use the additive inverse to help you subtract linear expressions? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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