Question

решите 2 1/3:(x-1 5/6)=1 5/6
(x+9,4):7,2=5
1,2-(x1/4)=1 5/6
(234+x)-456=178
заранее спасибо

Answer 1

2 1/3:(x-1 5/6)=1 5/6
x- 1 5/6 =2 1/3 : 1 5/6 
x - 1 5/6 = 7/3*6/11
x - 1 5/6 = 14/11
x=14/11+ 11/6
x=84/66 + 121/66
x=205/66
x=3 7/66

(x+9,4):7,2=5
x+9,4=5*7,2
x+9,4=36
x=35-9,4
x=25,6

1,2-(x-1/4)=1 5/6 
1,2-x+1/4=1 5/6
6/5 -x +1/4=1 5/6
29/20 - x =1 5/6
x=29/20 - 11/6
x=(174-220)/120
x= -46/120
x= -23/60

(234+x)-456=178
234+x-456=178
x-222=178
x=178+222
x=400

Answer 2

/-это дробная черта