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Математика visibility 47 просмотров

Вопрос:

-2(3,1x-1)+3(1.2x+1)=-14.5

Ответы и объяснения от Мегамозга

Мегамозг

-2(3.1х-1)+3(1.2х+1)=-14.5                                                                               -6.2х+2+3.6х+3=-14.5                                                                                       -2.6х+5=-14.5                                                                                                  -2.6х=-14.5-5                                                                                                   -2.6х=-19.5                                                                                                      х=-19.5:(-2.6)                                                                                                  х=7.5

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