Subtract 3/40 from 28/7, Solve 4 0/7

Subtract 3/40 from 28/7

1^st number: 4 0/7, 2^nd number: 3/40

28/7 - 3/40 is 157/40.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 7 × 40 = 280,
28/7 = 28 × 40/7 × 40 = 1120/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280
Subtract the two like fractions:
1120/280 - 21/280 = 1120 - 21/280 = 1099/280
After reducing the fraction, the answer is 157/40
In mixed form: 337/40

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