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Mathematics, 17.02.2021 20:30 tinaxiao

Jakob simplified the expression as shown. What was Jakob’s error in subtracting the expressions?
He used the commutative property incorrectly.
He used the distributive property incorrectly.
He used the associative property incorrectly.
He simplified the x coefficients incorrectly.

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Jakob simplified the expression as shown. What was Jakob’s error in subtracting the expressions?

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