Subtract 1/72 from 90/30, Solve 3 0/30

Subtract 1/72 from 90/30

1^st number: 3 0/30, 2^nd number: 1/72

90/30 - 1/72 is 215/72.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 30 × 12 = 360,
90/30 = 90 × 12/30 × 12 = 1080/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
1/72 = 1 × 5/72 × 5 = 5/360
Subtract the two like fractions:
1080/360 - 5/360 = 1080 - 5/360 = 1075/360
After reducing the fraction, the answer is 215/72
In mixed form: 271/72

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