Предмет: Математика, автор: Tima044

Помогите пожалуйста решить. Найдите Х: 1) 8/9 = 0,2х/0,45: 2) 18,2/5,6 = 19,5/4х: 3) 6/7 = 3,5х/24,5: Заранее спасибо

Ответы

Автор ответа: nyaa69

1) 8/9=0.2x/0.45
8*0.45=9*0.2x
3.6=1.8x
1.8x=3.6
x=3.6/1.8
x=2

2) 18.2/5.6=19.5/4x
4x*18.2=19.5*5.6
72.8x=109.2
x=109.2/72.8
x=1.5

3) 6/7=3.5x/24.5
6*24.5=7*3.5x
147=24.5x
24.5x=147
x=147/24.5
x=6

Автор ответа: Tima044

спасибо

Автор ответа: nyaa69

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