Subtract 72/30 from 18/24, Solve 18/24

Subtract 72/30 from 18/24

1^st number: 18/24, 2^nd number: 2 12/30

18/24 - 72/30 is -33/20.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 30 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120
Likewise, for the 2nd fraction, since 30 × 4 = 120,
72/30 = 72 × 4/30 × 4 = 288/120
Subtract the two like fractions:
90/120 - 288/120 = 90 - 288/120 = -198/120
After reducing the fraction, the answer is -33/20

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