```#include <stdio.h>
#include <iostream>
#include <math.h>
using namespace std;
int main()
{
	int a,b,c,d;
	cin>>a>>b>>c>>d;
	cout<<a<<"/"<<b<<"+"<<c<<"/"<<d<<"=";
	int y=b*d;
	int x=a*d+c*b;
	if (x>y)
	{
		cout<<x/y;
		x=x%y;
		if(x%y!=0)
		{
			cout<<"+";
		}
	}
	a=x,b=y;
	while(b)
	{
		int t=a%b;
		a=b;
		b=t;
	}
	if(a!=0)
	{
		x=x/a;
		y=y/a;
		cout<<x<<"/"<<y<<endl;
	}
}