Subtract 90/70 from 27/35
1st number: 27/35, 2nd number: 1 20/70
27/35 - 90/70 is -18/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
27/35 = 27 × 2/35 × 2 = 54/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Subtract the two like fractions:
54/70 - 90/70 = 54 - 90/70 = -36/70 - After reducing the fraction, the answer is -18/35
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