1)1+8(3x+7)=9
1+24х+56=9
24х=9-1-56
24х=-48
х=-48:24
х=-2
2)-2=9-(x+7)
-2=9-х-7
х=2+9-7
х=4
3) 9x-2(-5+7x)=-8x-5
9х+10-14х=-8х-5
9х-14х+8х=-5-10
3х=-15
х=-15:3
х=-5
4)-3+4(-7+5x)=9x-9
-3-28+20х=9х-9
20х-9х=3+28-9
11х=22
х=22:11
х=2
5)-1+5x=10x+8
5х-10х=1+8
-5х=9
х=9:(-5)
х=-1,8
6)-1+2x=10x+3
2х-10х=3+1
-8х=4
х=4:(-8)
х=-0,5
1)1+8(3x+7)=9
1+24х+56=9
24х=9-1-56
24х=-48
х=-48:24
х=-2
2)-2=9-(x+7)
-2=9-х-7
х=2+9-7
х=4
3) 9x-2(-5+7x)=-8x-5
9х+10-14х=-8х-5
9х-14х+8х=-5-10
3х=-15
х=-15:3
х=-5
4)-3+4(-7+5x)=9x-9
-3-28+20х=9х-9
20х-9х=3+28-9
11х=22
х=22:11
х=2
5)-1+5x=10x+8
5х-10х=1+8
-5х=9
х=9:(-5)
х=-1,8
6)-1+2x=10x+3
2х-10х=3+1
-8х=4
х=4:(-8)
х=-0,5