Question

Реши уравнение.
(270 - 180 : x) : 8 = 30
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x = .....

Answer 1

Cразу решение

(270-180:x):8=30, x не равно 0

(270-180/х) * 1/8=30

270х-180/х *1/8=30

2*(135х-90)/х * 1/8 =30

135х-90/х*1/4=30

135х-90/4x =30

135х-90=120х

135х-120х=90

15х=90

Х=6