Simplify (−5)∙(a−2b+3c−4d)−(−3)∙(4a−3b+2c−d)
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Answer:
(-17a+19b-21c+23d)
Step-by-step explanation:
(-5a+10b-15c+20d) - (-12a+9b-6c+3d)
(-5a-12a+10b+9b-15c-6c+20d+3d)
(-17a+19b-21c+23d)
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