Subtract 70/40 from 9/84
1st number: 9/84, 2nd number: 1 30/40
9/84 - 70/40 is -23/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
9/84 = 9 × 10/84 × 10 = 90/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840 - Subtract the two like fractions:
90/840 - 1470/840 = 90 - 1470/840 = -1380/840 - After reducing the fraction, the answer is -23/14
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