Subtract 45/84 from 90/70
1st number: 1 20/70, 2nd number: 45/84
90/70 - 45/84 is 3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
45/84 = 45 × 5/84 × 5 = 225/420 - Subtract the two like fractions:
540/420 - 225/420 = 540 - 225/420 = 315/420 - After reducing the fraction, the answer is 3/4
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Related: 90/70-90/84