Subtract 90/70 from 10/60
1st number: 10/60, 2nd number: 1 20/70
10/60 - 90/70 is -47/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
10/60 = 10 × 7/60 × 7 = 70/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Subtract the two like fractions:
70/420 - 540/420 = 70 - 540/420 = -470/420 - After reducing the fraction, the answer is -47/42
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