A) 3/4 : x = 1 1/5 : 1 1/3 б) 2х - 1/3 = 1/2 в) 2,5x : 14 = 1/7 : 30
3/(4x) = 6/5 : 4/3 2x = 1/2 + 1/3 2,5x = 1/7 : 30 * 14
3/(4x) = 6/5 * 3/4 2x = 5/6 2,5x = 2/30
3/(4x) = 9/10 x = 5/12 x = 2/30 : 25/10
36x = 30 х = 2/75
x = 30/36
x = 5/6
г) 2/x - 0,4 = 1/0,4 д) 3/4 = x - 1/3,2 е) 36 : 35 = 1/5x : 1/12
2/x = 2,5 + 0,4 x = 3/4 + 1/3,2 36/35 = 1/5x * 12
2/x = 2,9 x = 3/4 + 10/32 1/5x = 36/35 :12
x = 2 * 10/29 x = 24/32 + 10/32 1/5x = 3/35
x = 20/29 x = 34/32 x = 3/35 : 1/5
х = 1 1/16 x = 3/35 * 5
х = 3/7