Subtract 10/72 from 28/7, Solve 4 0/7

Subtract 10/72 from 28/7

1^st number: 4 0/7, 2^nd number: 10/72

28/7 - 10/72 is 139/36.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 7 × 72 = 504,
28/7 = 28 × 72/7 × 72 = 2016/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
10/72 = 10 × 7/72 × 7 = 70/504
Subtract the two like fractions:
2016/504 - 70/504 = 2016 - 70/504 = 1946/504
After reducing the fraction, the answer is 139/36
In mixed form: 331/36

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