2/7 = x/12x = 2*12/7x = 24/7
6x/4,5 = 3/7,56x = 4,5*3/7,56x = 1,8x = 1,8/6x = 0,3
x/2,4 = 8/1,6x = 2,4*8/1,6x = 12
4,5/x = 5,4/1,84,5 = 5,4/x*1,84,5 = 9,72/xx = 9,72/4,5x = 2,16
5,1/8,5 = 2,4/x5,1x = 2,48,55,1x = 20,4x = 20,4 / 5,1x = 4
2/7 = x/12
x = 2*12/7
x = 24/7
6x/4,5 = 3/7,5
6x = 4,5*3/7,5
6x = 1,8
x = 1,8/6
x = 0,3
x/2,4 = 8/1,6
x = 2,4*8/1,6
x = 12
4,5/x = 5,4/1,8
4,5 = 5,4/x*1,8
4,5 = 9,72/x
x = 9,72/4,5
x = 2,16
5,1/8,5 = 2,4/x
5,1x = 2,48,5
5,1x = 20,4
x = 20,4 / 5,1
x = 4