Subtract 72/20 from 70/35
1st number: 2 0/35, 2nd number: 3 12/20
70/35 - 72/20 is -8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
70/35 = 70 × 4/35 × 4 = 280/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Subtract the two like fractions:
280/140 - 504/140 = 280 - 504/140 = -224/140 - After reducing the fraction, the answer is -8/5
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