Subtract 10/84 from 30/15
1st number: 2 0/15, 2nd number: 10/84
30/15 - 10/84 is 79/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
30/15 = 30 × 28/15 × 28 = 840/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Subtract the two like fractions:
840/420 - 50/420 = 840 - 50/420 = 790/420 - After reducing the fraction, the answer is 79/42
- In mixed form: 137/42
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