1)X : 6/7 = 1 1/6 : 3 1/2 2) 3,6/x-1 = 7,8/6,53) 3x +2/7 = 4x -1/5​ умоляю посчитайте

x=11/42,x=4,x=17/35

x•7/6=11/6•1/3 • 1/2

7/6=11/6•1/3•1/2

7/6x=11/36

x=11/42

3,6/x-1=7,8/6,5, x≠1

18/5/x-1=7,8/6,5

18/5/x-1=39/5/6,5

18/5/x-1=39/5/13/2

18/5-(x-1)=6/5

90=30(x-1)

3=x-1

3-x=-1

-x=-1-3

-x=-4

x=4,x≠1

x=4

3x+2/7=-4x-1/5

3x+2/8=-1/5-2/7

-x=-1/5-2/7

-x=-17/35

x=17/35