Subtract 28/72 from 90/28, Solve 3 6/28

Subtract 28/72 from 90/28

1^st number: 3 6/28, 2^nd number: 28/72

90/28 - 28/72 is 178/63.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 28 × 18 = 504,
90/28 = 90 × 18/28 × 18 = 1620/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504
Subtract the two like fractions:
1620/504 - 196/504 = 1620 - 196/504 = 1424/504
After reducing the fraction, the answer is 178/63
In mixed form: 252/63

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