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# Checking Solutions

## Substitute values for variables to check equation solutions.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## Checking Possible Solutions - Overview

by CK-12 //basic
Overview
MEMORY METER
This indicates how strong in your memory this concept is
3
• Video

## Checking Possible Solutions - Example 1

by CK-12 //basic
Checking the Possible Solutions for Equations
MEMORY METER
This indicates how strong in your memory this concept is
0
• Video

## Checking Possible Solutions - Example 2

by CK-12 //basic
Checking the Possible Solutions for Inequalities
MEMORY METER
This indicates how strong in your memory this concept is
0