выа

6х-4-2(5х-11)=6х-4-10х+22=6х-10х+16=(6-10)х+16=-4х+16

6(х--12)=6х-12-3х+12=(6-3)х=3х

х-4-2(3х-12)=х-4-6х+24=(1-6)х+20=-5х+20

5(3х+2)-2(х-3)=15х+10 -2х+6=(15-2)х+16=13х+16

9(2х-20)-6(3х-30)=18х-180-18х+180=(18-18)х

ответ-81

8+1=9

81: 9=9

1) 3806*1< 3806+1

3806*1=3806< 3806+1=3807

3806< 3807

2) 17489*0< 17489+0

17489*0=0< 17489+0=17489

0< 17489