Предмет: Математика, автор: Bigday729

Пж двю 30 баллов решите пж

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Автор ответа: lolipopjh

Ответ:

1) 4-x/7 =x/9

252-9x=7x

-9x-7x=-252

-16x=-252

x=63/4

2)6-x/2=x/3

36-3x=2x

-3x-2x=-36

-5x=-36

x=36/5

3)x/5+x=-x/3+23/5

3x+15x=-5x+69

18x=-5x+69

18x+5x=69

23x=69

x=3

Пошаговое объяснение:

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