Subtract 90/15 from 20/70
1st number: 20/70, 2nd number: 6 0/15
20/70 - 90/15 is -40/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210 - Subtract the two like fractions:
60/210 - 1260/210 = 60 - 1260/210 = -1200/210 - After reducing the fraction, the answer is -40/7
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