Subtract 70/84 from 60/20, Solve 3 0/20

Subtract 70/84 from 60/20

1^st number: 3 0/20, 2^nd number: 70/84

60/20 - 70/84 is 13/6.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
70/84 = 70 × 5/84 × 5 = 350/420
Subtract the two like fractions:
1260/420 - 350/420 = 1260 - 350/420 = 910/420
After reducing the fraction, the answer is 13/6
In mixed form: 21/6

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