Subtract 70/21 from 30/6, Solve 5 0/6

Subtract 70/21 from 30/6

1^st number: 5 0/6, 2^nd number: 3 7/21

30/6 - 70/21 is 5/3.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 6 × 7 = 42,
30/6 = 30 × 7/6 × 7 = 210/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
70/21 = 70 × 2/21 × 2 = 140/42
Subtract the two like fractions:
210/42 - 140/42 = 210 - 140/42 = 70/42
After reducing the fraction, the answer is 5/3
In mixed form: 12/3

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