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7\times \frac{2\times 7+6}{7}=12
Multiply both sides of the equation by 21, the least common multiple of 3,7.
7\times \frac{14+6}{7}=12
Multiply 2 and 7 to get 14.
7\times \frac{20}{7}=12
Add 14 and 6 to get 20.
20=12
Cancel out 7 and 7.
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Compare 20 and 12.
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