<span>1/4 : 1(целая) 1/2 = 1/4 : 3/2=1/4*2/3=1/2*1/3=1/6</span>
-18,2:(-8 2/3)=-182/10:(-26/3)=-182/10*(-3/26)=21/10=2,1
-8 1/2:(-1,7)=-17/2:(-17/10)=-17/2*-(10/17)=5
3 5/9:(-0,16)=32/9:(-16/100)=32/9*(-100/16)=-200/9
-200/9*4,14=-200/9*414/100=-92
-92:23=-4
2,1+5-4=3,1
7х+9-5х=13
2х=13-9
2х=4
Х=2
8х+55=167
8х=167-55
8х=112
Х=14
(6х+14)/2+15=40
(6х+14+30)/2=40
6х/2+22=40
3х+22=40
3х=40-22
3х=18
Х=6
Vкуба=a^3
1^3= 1
1см^3=0,001дм^3