РЕШИТЕ УРАВНЕНИЕ (8/15ПЛЮС2/9X):3/5=2

Question

РЕШИТЕ УРАВНЕНИЕ (8/15ПЛЮС2/9X):3/5=2

Answer 1

Смотри фото.................

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Comments

спасибо

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Рада помочь)

Answer 2

(8/15 + 2/9х)/ 3/5 = 2
8/15 + 2/9х = 2 × 3/5
8/15 + 2/9х = 1,2
8/15 + 2/9х - 1,2 = 0
8/15 - 1 2/10 + 2/9х = 0
16/30 - 1 6/30 + 2/9х = 0
16/30 - 36/30 + 2/9х = 0
-20/30 + 2/9х = 0
2/9х = 20/30
х = 20/30 : 2/9
х = 20/30 × 9/2
х = 180/60
х = 3