Subtract 81/70 from 60/28, Solve 2 4/28

Subtract 81/70 from 60/28

1^st number: 2 4/28, 2^nd number: 1 11/70

60/28 - 81/70 is 69/70.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 28 × 5 = 140,
60/28 = 60 × 5/28 × 5 = 300/140
Likewise, for the 2nd fraction, since 70 × 2 = 140,
81/70 = 81 × 2/70 × 2 = 162/140
Subtract the two like fractions:
300/140 - 162/140 = 300 - 162/140 = 138/140
After reducing the fraction, the answer is 69/70

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