Subtract 42/84 from 63/45
1st number: 1 18/45, 2nd number: 42/84
63/45 - 42/84 is 9/10.
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,
63/45 = 63 × 28/45 × 28 = 1764/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
42/84 = 42 × 15/84 × 15 = 630/1260 - Subtract the two like fractions:
1764/1260 - 630/1260 = 1764 - 630/1260 = 1134/1260 - After reducing the fraction, the answer is 9/10
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