Subtract 20/84 from 40/30
1st number: 1 10/30, 2nd number: 20/84
40/30 - 20/84 is 23/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
40/30 = 40 × 14/30 × 14 = 560/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Subtract the two like fractions:
560/420 - 100/420 = 560 - 100/420 = 460/420 - After reducing the fraction, the answer is 23/21
- In mixed form: 12/21
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