x : 2

a ,x : 2 / -11 = -11 / x : 2
b,1 / 2 = x : 8 -1 / 14
c, 25 / 30 = 2x + 3 / 6
d , 6 / x -3 = 9 / 2x -7
e , -7 / x + 1 = 6 / x + 27