7+(3х-8)=7+3х-8=3х-1
6-(8+3х)=6-8-3х=-2-3х
4х+(2+6х)=4х+2-6х=2-2х
9х-(12-2)=9х-12+2=9х-10
-5+(6+3х)=-5+6-3х=1-3х
-12х-(2-8х)=-12х-2+8х=-4х-2
-(4х-1)+(3х-1)=-4х+1+3х-1=-х
10+(3х-4)-(7+2х)=10+3х-4-7-2х=х-1
3(2х-5)=6х-15
-5(2,8х-1,2)=-14х+6
0,2(7-4х)-0,6(5+10х)=1,4-0,8х-3-6х=-6,8х-1,6
-2(4х-7)=-8х+14
-0,5(24х+8)=-12х-4