Question

3х+2(х+5)=9х+4

х+0.2x-3=x+3

Answer 1

1) 3х+2х+10=9х+4

    6=4х

   х=1.5

2)1.2х-3=х+2

   0.2х=5

  х=25

Думаю так.

Answer 2

3х+2*(х+5)=9х+4

3х+2х+10=9х+4

5х-9х=4-10

-4х=-6

х=-6:(-4)

х=1.5

ОТВЕТ:1.5

 

х+0.2х-3=х+3

1.2х-х=3+3

0.2х=6

х=6:0.2

х=30

ОТВЕТ:30