Let a and B be natural numbers and satisfy 11 / A + B / 3 = 17 / 33, then a + B = ()

Let a and B be natural numbers and satisfy 11 / A + B / 3 = 17 / 33, then a + B = ()

11/A+B/3=17/33
11*11/A+B=17
A+B=17/121