Решите уравнение (7/8-0.2)*х=8.1. и (4-2 3/7)*х=2 5/14

Question

Решите уравнение (7/8-0.2)*х=8.1.

и (4-2 3/7)*х=2 5/14

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Answer 1

1)(7/8-0.2)*x=8.1
(0.875-0.2)*x=8.1
0.675x=8.1
x=8.1/0.675=8100/675=12
x=12
Ответ: x=12
2)(4-17/7)*x=33/14
11/7 x=33/14
x=33/14*7/11=3/2=1.5
Ответ:х=1.5