Subtract 9/28 from 45/40, Solve 1 5/40

Subtract 9/28 from 45/40

1^st number: 1 5/40, 2^nd number: 9/28

45/40 - 9/28 is 45/56.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280
Likewise, for the 2nd fraction, since 28 × 10 = 280,
9/28 = 9 × 10/28 × 10 = 90/280
Subtract the two like fractions:
315/280 - 90/280 = 315 - 90/280 = 225/280
After reducing the fraction, the answer is 45/56

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