7x/5=2+x/9; 7-х/5=2+х/15; х/15+х/27=3; 3х/5=12-х/3; 2х+5/4=х-3/2,5;...

Question

7x/5=2+x/9; 7-х/5=2+х/15; х/15+х/27=3; 3х/5=12-х/3; 2х+5/4=х-3/2,5; х(х+2)=0;(х-1)*(х+4):крик души помогите!!!!!!!!!!!!!!

Answer 1

8х=-3
Х=-3:8
Х=-0,375
4x=7
X=7:4
X=1.61