Решите уравнения x-1.7=4x-13.4 ,4*(12-2x)=102-2x

Question

Решите уравнения x-1.7=4x-13.4 ,4*(12-2x)=102-2x

Answer 1

Х-1.7=4х-13.4
х-4х=-13.4+1.7
-3х=-11.7
х=-11.7:-3
х=3.9

4(12-2х)=102-2х
48-8х=102-2х
-8х+2х=102-48
-6х=54
х=54:-6
х=-9

Answer 2

1) х-1,7=4х-13,4
х-4х=-13,4+1,7
3х=-11,7
х=-3,9

2) 4×(12-2х)=102-2х
48-8х=102-2х
-8х+2х=102-48
-6х=54
х=-9.