Write this without the decimal, first = 217
Subtract the non-repeating part from this = 217 - 2 = 215
Write this over a denominator that has the same number of 9s a the repeating digits = 99 and the same number of 0s as the non-repeating digits = 0
So we have
215 / 990 = 43 / 198 {check for yourself that this is equal to the given decimal }
So .... a = 43 and b = 198 and a + b = 241
