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McGraw Hill

Glencoe Mathematics: Quiz on Solving Systems of Equations in Three Variables

For Students 9th - 10th Standards
The online assessment demonstrates knowledge of advanced mathematical concepts in Algebra II. The questions test students on solving systems of equations in three variables. Topics include solving systems using the substitution and...
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Khan Academy

Khan Academy: Manipulate Expressions Using Structure

For Students 9th - 10th Standards
Rewrite an expression containing two unknown variables by choosing a given equation that is equivalent. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.