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Simplify: 3ab + 5a – (ab – 4ab)
This problem addresses NYS Standard:
AA.13 – Add and subtract monomials and polynomials
Richard Mercado shared how you tackled this problem.
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1st: The ( ) is confusing. Let me get rid of it first.
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2nd: I use different shapes to show if they are like or unlike terms
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3rd: I want to use the Commutative property to solve problem.
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In conclusion: AA.13 – Add and subtract monomials and polynomials
the problem Simplify: 3ab + 5a – (ab – 4ab) is the same as 6ab + 5a
[Take-away] Richard was able to solve this problem successfully b/c:
(a) used 2 math properties he found in book. (b) used shapes as a visual aid