7x+3=30x-2x

5,4-1,5x=0,3x-3,6

3(x-2)=x+2

(7x+1)-(9x+3)=5

7x+3=30x-2x7x+3=28x7х-28х=-3-21х=-3х=-3/-21х=1/75,4-1,5x=0,3x-3,6-1,5x-0,3x=-3,6-5,4-1,8х=-9х=53(x-2)=x+23х-6=х+23х-х=2+62х=8х=8:2х=4(7x+1)-(9x+3)=57х+1-9х-3=5-2х=5-1+3-2х=7х=7:(-2)х=-3,5