2х-х+4х=150 (18х-1)*0.4=3.2 Помогите

Question

2х-х+4х=150 (18х-1)*0.4=3.2 Помогите

Answer 1

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Answer 2

2х-х+4х=150
5x=150
x=150/5
x=30

(18х-1)*0.4=3.2
18x-1=3,2/0,4
18x-1=8
18x=9
x=9/18
x=½