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Mathematics 20 Online
OpenStudy (anonymous):

Which algebraic expression is equivalent to the expression below? 7(3x + 3) + 20 42x 21x + 41 7x + 6 21x + 1

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?

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

OpenStudy (anonymous):

So B?...

OpenStudy (anonymous):

correct

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