class Solution { public int[] solution(int numer1, int denom1, int numer2, int denom2) { int[] answer = new int[2]; if(denom2 % denom1 == 0) { if(denom2 == denom1) { int plus = numer1 + numer2; answer[0] = plus; answer[1] = denom2; } else { int denom = denom2 / denom1; denom1 = denom1 * denom; numer1 = numer1 * denom; int plus = numer1 + numer2; answer[0] = plus; answer[1] = denom2;} }else if(de..