Subtract 3/80 from 90/63, Solve 1 27/63

Subtract 3/80 from 90/63

1^st number: 1 27/63, 2^nd number: 3/80

90/63 - 3/80 is 779/560.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040

Next, find the equivalent fraction of both fractional numbers with denominator 5040
For the 1st fraction, since 63 × 80 = 5040,
90/63 = 90 × 80/63 × 80 = 7200/5040
Likewise, for the 2nd fraction, since 80 × 63 = 5040,
3/80 = 3 × 63/80 × 63 = 189/5040
Subtract the two like fractions:
7200/5040 - 189/5040 = 7200 - 189/5040 = 7011/5040
After reducing the fraction, the answer is 779/560
In mixed form: 1219/560

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