The number of a is seven sixths, the number of B is four times less than five sixths

The number of a is seven sixths, the number of B is four times less than five sixths


Let B be X
4 x - 5 / 6 = 7 / 6
4 x = 7 / 6 + 5 / 6
4 x = 2
x = 1 / 2
A: B is 1 / 2