Subtract 72/24 from 81/70
1st number: 1 11/70, 2nd number: 3 0/24
81/70 - 72/24 is -129/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
81/70 = 81 × 12/70 × 12 = 972/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
72/24 = 72 × 35/24 × 35 = 2520/840 - Subtract the two like fractions:
972/840 - 2520/840 = 972 - 2520/840 = -1548/840 - After reducing the fraction, the answer is -129/70
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