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What's (-3x + 7) + (-6x + 9) and if you can, ow do I show work for that

User Asthomas
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In order to add the two expressions (-3x+7) and (-6x+9), you combine the like terms, or the terms with the same variable and are raised to the same power. Because -3x and -6x are like terms, you can add those together to result in -9x. Then, because 7 and 9 are like terms, you combine those to get 16. Because -9x and 16 are not like terms, your answer will remain as:
-9x+16
User DLauer
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