# -*- coding: utf-8 -*-


if __name__ == '__main__':
    n=int(input())
    for i in range(n):
        l=input().split()
        a=int(l[0])
        b=int(l[1])
        c=str(a-b)
        d=c[1:]
        if len(d)==0:
            d="0"
        if a==b:
            print("=")
        elif int(d)==b-a:
            print(b'\x3c'.decode('utf-8'))
        else:
            print(b'\x3e'.decode('utf-8'))