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SandMaster
@SandMaster
July 2022
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Упростите выражение и найдите его значение:
1) 15c - 15d, при c-d = 4
2) 5x + 5y, при x+y=6
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Darya0iz0Rraya
1)
15с - 15d = 15 * (с-d) = 15 * 4 (т.к. с - d = 4) = 60
2)
5х + 5у = 5 * (х + у) = 5 * 6 (т.к. х + у = 6) = 30
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Answers & Comments
2) 5х + 5у = 5 * (х + у) = 5 * 6 (т.к. х + у = 6) = 30