Subtract 21/60 from 60/42, Solve 1 18/42

Subtract 21/60 from 60/42

1^st number: 1 18/42, 2^nd number: 21/60

60/42 - 21/60 is 151/140.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 42 × 10 = 420,
60/42 = 60 × 10/42 × 10 = 600/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420
Subtract the two like fractions:
600/420 - 147/420 = 600 - 147/420 = 453/420
After reducing the fraction, the answer is 151/140
In mixed form: 111/140

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