02.04.2022

-2 (0,3x+2 целые 1/4)=0,5x-3,75

Вопрос школьника по предмету Математика

Ответ учителя по предмету Математика

-2(0,3х + 2 1/4) = -0,5х — 3,75

-2*0,3х — 2*9/4 = -0,5х — 3,75

-0,6х — 9/2 = -0,5х — 3,75

-0,6х + 0,5х = -3,75 + 9/2

-0,1х = -3,75 + 4,5

-0,1х = 0,75

х = 0,75/(-0,1)

х = -7,5
Ответ: х= -7,5

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