Evaluate
21
Factor
3\times 7
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\frac{18+18+24+30+36}{6}
Add 6 and 12 to get 18.
\frac{36+24+30+36}{6}
Add 18 and 18 to get 36.
\frac{60+30+36}{6}
Add 36 and 24 to get 60.
\frac{90+36}{6}
Add 60 and 30 to get 90.
\frac{126}{6}
Add 90 and 36 to get 126.
21
Divide 126 by 6 to get 21.
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