Subtract 6/30 from 21/7, Solve 3 0/7

Subtract 6/30 from 21/7

1^st number: 3 0/7, 2^nd number: 6/30

21/7 - 6/30 is 14/5.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
21/7 = 21 × 30/7 × 30 = 630/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
6/30 = 6 × 7/30 × 7 = 42/210
Subtract the two like fractions:
630/210 - 42/210 = 630 - 42/210 = 588/210
After reducing the fraction, the answer is 14/5
In mixed form: 24/5

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