Subtract 72/20 from 70/30
1st number: 2 10/30, 2nd number: 3 12/20
70/30 - 72/20 is -19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
70/30 = 70 × 2/30 × 2 = 140/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
72/20 = 72 × 3/20 × 3 = 216/60 - Subtract the two like fractions:
140/60 - 216/60 = 140 - 216/60 = -76/60 - After reducing the fraction, the answer is -19/15
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