Solving equations using subtraction

When solving equations using subtraction, they will have the following form:                         

x + b = c

Recall that ax + b = c is a linear equation.

Therefore, the equation x + b = c is a linear equation with a = 1.

To see this, notice that 1.x = x

Thus, we can rewrite x + b = c as

1.x + b = c

You can solve x + b = c in one step.

When solving one step equation of the form x + b = c, subtract b from both sides of the equation.

Let us illustrate with examples:

Example #1: Solve x + 3 = 8 for x