A) 5/9x-7/4x+17/18x=-1/4
10/18x+17/18x-7/4x=-1/4
27/18x-7/4x=-1/4
3/2x-7/4x=-1/4
6/4x-7/4x=-1/4
-1/4x=-1/4
x=-1/4:(-1/4)
x=1
б)1/6x-0,82=3/8x-1,37
1/6x-3/8x=-1,37+0,82
4/24x-9/24x=-0,55
-5/24x=-0,55
x=-0,55:(-5/24)
x=2,64
в)1/9x+7/18x-11/27x=2 1/2
2/18x+7/18x-11/27x=2,5
1/2x-11/27x=2,5
27/54x-22/54x=2,5
5/54x=2,5
x=2.5 : 5/54
x=27
г)0,07-3 1/9x=0.26-x
-28/9x+x=0,26-0,07
-28/9x+9/9x=0,19
-19/9x=0.19
x=0,19 : (-19/9)
x=-0,09