Subtract 42/9 from 70/49
1st number: 1 21/49, 2nd number: 4 6/9
70/49 - 42/9 is -68/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
70/49 = 70 × 9/49 × 9 = 630/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
42/9 = 42 × 49/9 × 49 = 2058/441 - Subtract the two like fractions:
630/441 - 2058/441 = 630 - 2058/441 = -1428/441 - After reducing the fraction, the answer is -68/21
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