Question

pair of integers whose difference is -30

Answer 1

The pair which gives difference -30 are:-
◆60-90= -30
◆70-100= -30
◆80-110= -30
◆90-120= -30
◆100-130= -30
◆110-140= -30

Answer 2

-19-11= -30
32-62= -30etc..