− 21 (− 25 b+4b−3)+4b
Solution
Sure, let's solve this step by step:
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First, distribute -21 inside the parentheses: -21 * -25b + -21 * 4b + -21 * -3 This simplifies to: 525b - 84b + 63
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Then, add the 4b that is outside the parentheses: 525b - 84b + 63 + 4b This simplifies to: 441b + 63
So, the simplified form of the expression "− 21 (− 25 b+4b−3)+4b" is 441b + 63.
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