Subtract 72/18 from 30/75
1st number: 30/75, 2nd number: 4 0/18
30/75 - 72/18 is -18/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
30/75 = 30 × 6/75 × 6 = 180/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
72/18 = 72 × 25/18 × 25 = 1800/450 - Subtract the two like fractions:
180/450 - 1800/450 = 180 - 1800/450 = -1620/450 - After reducing the fraction, the answer is -18/5
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