Answer:
Problem 1:
a. x=2
b. x=3
c. x=1
Problem 2:
A multiplication equation to hold the table true:

A division equation to hold the table true:

Explanation:
Given in problem 1:
(a). The equation is

It holds true for all values of
.
Let us say
,
which is greater than 1.
(b). The equation is

It holds true for all values of
.
Let us say

which is less than 1.
(c). The equation is

It holds true for only
.
Let us say
,
which is equal to 1.
Problem 2:
A multiplication equation to hold the table true:

A division equation to hold the table true:

Therefore these are the values which hold true to the equation in problem 1 and 2.