5х=-7-25, 5х=-32, х=-6,4
2) 9=5х+45, 5х=9-45, 5х= -36, х=-7,2
3)7 (х-1) =3х, 7х-3х==7, 4х=7, х= 1 3/4
4) 9 (x+7)=-x , 9х+х =- 63, 10х=-63, х=-6,3
5) 5 (x-3)=4x, 5х-4х=15, х=15
6) 4 (x+6)=x, 4х-х=-24, 3х=-24, х=-8
7) -x=4 (6+x), 4х+х=-24, 5х=-24, х=-4,8