Subtract 12/28 from 90/6, Solve 15 0/6

Subtract 12/28 from 90/6

1^st number: 15 0/6, 2^nd number: 12/28

90/6 - 12/28 is 102/7.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 6 × 14 = 84,
90/6 = 90 × 14/6 × 14 = 1260/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
12/28 = 12 × 3/28 × 3 = 36/84
Subtract the two like fractions:
1260/84 - 36/84 = 1260 - 36/84 = 1224/84
After reducing the fraction, the answer is 102/7
In mixed form: 144/7

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