Solving equations using subtraction

When solving equations using subtraction, they will have the 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 

Alternatively, you do not have to put the -3 beneath the 3. You can also put it next to it.

x + 3 = 8

x + 3 − 3 = 8 − 3

x + 0 = 5

x = 5

Example #2 

Solve x + 5 = 10 for x 

Solving  x + 5 = 10

Example #3 

Solve x + 5 = - 10 for x

Solving x + 5 = -10

Solving equations using subtraction. Can you get 100% on this quiz?





Realated content

Linear equations calculator

Easily solve equations of the form x + b = c with the click of a button!







Recent Articles

  1. Math Skills by Grade

    May 21, 17 09:19 PM

    Sharpen your math skills by grade here with crystal clear lessons

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

            Follow me on Pinterest


Page copy protected against web site content infringement by Copyscape








Recent Lessons

  1. Math Skills by Grade

    May 21, 17 09:19 PM

    Sharpen your math skills by grade here with crystal clear lessons

    Read More