Subtract 4/84 from 30/45
30/45 - 4/84 is 13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
30/45 = 30 × 28/45 × 28 = 840/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
4/84 = 4 × 15/84 × 15 = 60/1260 - Subtract the two like fractions:
840/1260 - 60/1260 = 840 - 60/1260 = 780/1260 - After reducing the fraction, the answer is 13/21
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