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OpenStudy (anonymous):
Which algebraic expression is equivalent to the expression below? 7(3x + 3) + 20 42x 21x + 41 7x + 6 21x + 1
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OpenStudy (anonymous):
@horsegirl27
OpenStudy (anonymous):
foil the 7(3x + 3)
OpenStudy (anonymous):
???
OpenStudy (anonymous):
7 times 3x + 7 times 3
OpenStudy (anonymous):
what's 7 times 3x?
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OpenStudy (anonymous):
21x
OpenStudy (anonymous):
yep, and whats 7 times 3
OpenStudy (anonymous):
21
OpenStudy (anonymous):
we have 21x + 21 + 20
OpenStudy (anonymous):
simplify that
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OpenStudy (anonymous):
So B?...
OpenStudy (anonymous):
correct
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