Subtract 16/18 from 20/7, Solve 2 6/7

Subtract 16/18 from 20/7

1^st number: 2 6/7, 2^nd number: 16/18

20/7 - 16/18 is 124/63.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 7 × 18 = 126,
20/7 = 20 × 18/7 × 18 = 360/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
16/18 = 16 × 7/18 × 7 = 112/126
Subtract the two like fractions:
360/126 - 112/126 = 360 - 112/126 = 248/126
After reducing the fraction, the answer is 124/63
In mixed form: 161/63

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