Предмет: Математика, автор: kazachkoova

m-5/7m=1/4
ПОМОГИТЕ ПОЖАЛУЙСТА

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Автор ответа: Pingvinus

0

m-5/7m=1/4
m×(1- 5/7) = 1/4
m× ( 7/7 - 5/7) = 1/4
2/7×m = 1/4
m = 1/4 ÷ 2/7
m = 1/4 × 7/2
m = 7/8

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