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azalea070
@azalea070
September 2021
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-2,5(3-a)+5(a-7)
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prettypushkova
Verified answer
-2,5(3 - а) + 5(а - 7) = - 7,5 + 2,5а + 5а - 35 = (2,5а + 5а) - (7,5 + 35) =
= 7,5а - 42,5.
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Verified answer
-2,5(3 - а) + 5(а - 7) = - 7,5 + 2,5а + 5а - 35 = (2,5а + 5а) - (7,5 + 35) == 7,5а - 42,5.