A few days ago
Anonymous

what is 9y+21?

factor an check by multiplying

Top 4 Answers
A few days ago
Anonymous

Favorite Answer

you can’t solve that; it’s not an equation… factoring gets you 3(y + 7). Distribute that out by multiplying and you get 9y + 21.
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A few days ago
Ed
9y + 21

Factorise by taking out common factor of 3

=3(3y + 7)

Multiply out to check

=3*3y + 3*7

=9y + 21

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A few days ago
Anonymous
By factoring, the answer is (3y+7) (1+2).

When you multiply it out, 3y times 1 is 3y, and 3y times 2 is 6y. 3y + 6y is 9y. Then, 7 times 1 is 7, and 7 times 2 is 14. 14 + 7 is 21.

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A few days ago
Max
9y+21

9y+21=0

9y=-21

9y/9=-21/9

y=-2 3/9

y=-2 1/3

9y+21=0

9(-2 1/3)+21=0

21-21=0

0=0

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