View Compilation Error

0_0_32541817_23256.cpp: In function 'double solve(double, double)':
0_0_32541817_23256.cpp:20:176: error: expected ')' before ';' token
     if (fabs(simpson(l, mid) + simpson(mid, r) - simpson(l, r)) <= eps * 15) return simpson(l, mid) + simpson(mid, r) + (simpson(l, mid) + simpson(mid, r) - simpson(l, r) / 15;
                                                                                                                                                                                ^