Subtract 20/49 from 90/42
1st number: 2 6/42, 2nd number: 20/49
90/42 - 20/49 is 85/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
90/42 = 90 × 7/42 × 7 = 630/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
20/49 = 20 × 6/49 × 6 = 120/294 - Subtract the two like fractions:
630/294 - 120/294 = 630 - 120/294 = 510/294 - After reducing the fraction, the answer is 85/49
- In mixed form: 136/49
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