Subtract 72/35 from 90/70
1st number: 1 20/70, 2nd number: 2 2/35
90/70 - 72/35 is -27/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 35 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Likewise, for the 2nd fraction, since 35 × 2 = 70,
72/35 = 72 × 2/35 × 2 = 144/70 - Subtract the two like fractions:
90/70 - 144/70 = 90 - 144/70 = -54/70 - After reducing the fraction, the answer is -27/35
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Related: 90/70-72/70