### Home > AC > Chapter 4 > Lesson 4.1.5 > Problem 4-45

4-45.

For each equation below, solve for the variable. Check your solutions, if possible, and show all work.

First, try rewriting all of the subtraction as addition, then attempt to solve by combining like terms.

Since

(or, depending on how you solved the problem), can equal any number.

Refer to parts (a) and (d).

Refer to parts (a) and (d).

One strategy is to rewrite all of the subtraction within the problem as addition.

Now simplify, starting with combining like terms and then isolating the variable.

No solution because

is not equal to .