n=int(input())
for i in range(n):
	a,b=map(int,input().split())
	if a==b:
		print("=")
		continue
	A,B=a,b
	while A!=0 and B!=0:
		A/=10
		B/=10
	if A==0 and B!=0:
		print("<")
		continue
	elif A!=0 and B==0:
		print(">")
		continue
	A,B=a%10,b%10
	flg=False
	for i in range(11):
		if A+i==B:
			print("<")
			flg=True
			break
	if not flg:
		print(">")