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Which two expressions are equivalent?
A. 7(3 + x) and 7∙ 3 + 3 ∙ x
B. 7 + 3 + x and (7 + 3) + x
C. 7 ∙ x ∙ 3 and 7(x + 3)
D. 7 ÷ (3 – x) and 7 ÷ (x – 3)
Your answer is B because the first on you are adding from left to right and in the second one, you are just adding parentheses around something that was going to get added together anyways and overall, they both come out to 10+x
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