Subtract 90/14 from 21/5
1st number: 4 1/5, 2nd number: 6 6/14
21/5 - 90/14 is -78/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
21/5 = 21 × 14/5 × 14 = 294/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
90/14 = 90 × 5/14 × 5 = 450/70 - Subtract the two like fractions:
294/70 - 450/70 = 294 - 450/70 = -156/70 - After reducing the fraction, the answer is -78/35
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