When a pronumeral is on both sides of an equation, remove the pronumeral term from the right-hand side of the equation by using inverse
operations. Then continue to use inverse operations to solve
the equation for the pronumeral.
Example 10
Solution:
Problem Solving 3
Example 11
If 7 less than three times a number is 9 more than the number, what is
the number?
Solution:
Let x be the number.
Seven less than three times x is 3x – 7, and 9 more than x is x + 9.
