Subtract 12/30 from 42/49
42/49 - 12/30 is 16/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
42/49 = 42 × 30/49 × 30 = 1260/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
12/30 = 12 × 49/30 × 49 = 588/1470 - Subtract the two like fractions:
1260/1470 - 588/1470 = 1260 - 588/1470 = 672/1470 - After reducing the fraction, the answer is 16/35
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