#include<stdio.h>

int main() { int t; char s[100]; int a[100]; while (scanf("%s", s) != EOF) { a[0] = s[0] - '0'; a[2] = s[2] - '0'; a[4] = s[4] - '0'; a[6] = s[6] - '0'; int fm = a[2] * a[6]; int fz1 = a[0] * a[6]; int fz2 = a[4] * a[2]; int fzh = fz1 + fz2; int fzc = fz1 - fz2; if (a[2] == a[6]) { if (s[3] == '+') { int p = a[0] + a[4]; for (int k = p; k >= 1; k--) { if (p % k == 0 && a[2] % k == 0) { p = p / k; a[2] = a[2] / k; break; } } if (a[2] == 1) { printf("%d\n", p); } else { printf("%d/%d\n", p, a[2]); }

} if (s[3] == '-') { if (a[0] == a[4]) { printf("0"); } else if (a[0] > a[4]) { int p = a[0] - a[4]; for (int k = p; k >= 1; k--) { if (p % k == 0 && a[2] % k == 0) { p = p / k; a[2] = a[2] / k; break; } } if (a[2] == 1) { printf("%d\n", p); } else { printf("%d/%d\n", p, a[2]); } } else { int p = a[4] - a[0]; for (int k = p; k >= 1; k--) { if (p % k == 0 && a[2] % k == 0) { p = p / k; a[2] = a[2] / k; break; } } if (a[2] == 1) { printf("%d\n", a[4] - a[0]); } else { printf("-%d/%d\n", a[4] - a[0], a[2]); }

} } } else { if (s[3] == '+') { for (int k = fzh; k >= 1; k--) { if (fzh % k == 0 && fm % k == 0) { fzh = fzh / k; fm = fm / k; break; } } if (fm == 1) { printf("%d\n", fzh); } else { printf("%d/%d\n", fzh, fm); }

}
if (s[3] == '-') {
	if (fzc == 0) {
		printf("0");
	} else if (fzc > 0) {
		for (int k = fzc; k >= 1; k--) {
			if (fzc % k == 0 && fm % k == 0) {
				fzc = fzc / k;
				fm = fm / k;
				break;
			}
		}
		if (fm == 1) {
			printf("%d\n", fzc);
		} else {
			printf("%d/%d\n", fzc, fm);
		}

	} else if (fzc < 0) {
		fzc = -fzc;
		for (int k = fzc; k >= 1; k--) {
			if (fzc % k == 0 && fm % k == 0) {
				fzc = fzc / k;
				fm = fm / k;
				break;
			}
		}
		if (fm == 1) {
			printf("-%d\n", fzc);
		} else {
			printf("-%d/%d\n", fzc, fm);
		}

	}
}

}

}

return 0;

}