Subtract 4/60 from 80/63, Solve 1 17/63

Subtract 4/60 from 80/63

1^st number: 1 17/63, 2^nd number: 4/60

80/63 - 4/60 is 379/315.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 60 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 63 × 20 = 1260,
80/63 = 80 × 20/63 × 20 = 1600/1260
Likewise, for the 2nd fraction, since 60 × 21 = 1260,
4/60 = 4 × 21/60 × 21 = 84/1260
Subtract the two like fractions:
1600/1260 - 84/1260 = 1600 - 84/1260 = 1516/1260
After reducing the fraction, the answer is 379/315
In mixed form: 164/315

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