Subtract 63/35 from 81/40, Solve 2 1/40

Subtract 63/35 from 81/40

1^st number: 2 1/40, 2^nd number: 1 28/35

81/40 - 63/35 is 9/40.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280
Likewise, for the 2nd fraction, since 35 × 8 = 280,
63/35 = 63 × 8/35 × 8 = 504/280
Subtract the two like fractions:
567/280 - 504/280 = 567 - 504/280 = 63/280
After reducing the fraction, the answer is 9/40

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