Given: 2<a <5, 3<b <7.

Question

Find:
a −b and a/b

Answer 1

the smallest value of a-b is when a is smallest and b is largest: 2-7 = -5
the largest is similar: 5-3 = 2
so, -5 < a-b < 2
similarly, 2/7 < a/b < 5/3