−9(−8m−5m+1)−9m
Solution
Sure, let's solve this step by step:
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First, distribute the -9 inside the parentheses: -9 * -8m + -9 * -5m + -9 * 1. This simplifies to 72m + 45m - 9.
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Then, combine like terms: 72m + 45m becomes 117m.
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So, the expression inside the parentheses simplifies to 117m - 9.
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Finally, subtract 9m from the result: 117m - 9 - 9m simplifies to 108m - 9.
So, the simplified form of the expression -9(-8m -5m +1) -9m is 108m - 9.
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