How do you check solutions when solving one step equations?

2 Answers
Jul 5, 2018

Answer:

Substitute the solution for the variable in the equation and see if both sides of the equation are equal.

Explanation:

For example:

#x+9=12#

Subtract #9# from both sides.

#x=12-9#

#x=3#

Now check by substituting #3# for #x# into the equation and solve.

#3+9=12#

#12=12# Check!

Jul 5, 2018

Answer:

See below:

Explanation:

When we want to check solutions for any equation, we plug the value of the variable in.

For example, if we have the equation

#4x=28#

This easy solves to

#x=7#

We know what #x# is, so we can plug this value into our equation:

#4(7)=28#

#=>28=28#

This is true, so #x=7# is the correct solution.

Hope this helps!