Упростите выражение 7(а+3)-3,4(а-5)
7(а+3)-3,4(а-5)=7а+21-3.4 а+17=3.6а+38
7(a+3)-3,4(a-5)=7a+21-3,4a+17=3,6a+38
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7(а+3)-3,4(а-5)=7а+21-3.4 а+17=3.6а+38
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7(a+3)-3,4(a-5)=7a+21-3,4a+17=3,6a+38