Algebra › Combining like terms

Teacher info
Adding/subtracting terms with matching variables
CCSS.MATH.CONTENT.6.EE.A.4
Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for..

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https://schoolyourself.org/page/lti/sy/algebra/simplify
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