Subtract 70/20 from 42/49
1st number: 42/49, 2nd number: 3 10/20
42/49 - 70/20 is -37/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
42/49 = 42 × 20/49 × 20 = 840/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
70/20 = 70 × 49/20 × 49 = 3430/980 - Subtract the two like fractions:
840/980 - 3430/980 = 840 - 3430/980 = -2590/980 - After reducing the fraction, the answer is -37/14
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