Subtract 72/40 from 70/20
1st number: 3 10/20, 2nd number: 1 32/40
70/20 - 72/40 is 17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
70/20 = 70 × 2/20 × 2 = 140/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
72/40 = 72 × 1/40 × 1 = 72/40 - Subtract the two like fractions:
140/40 - 72/40 = 140 - 72/40 = 68/40 - After reducing the fraction, the answer is 17/10
- In mixed form: 17/10
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