Subtract 70/48 from 20/42
1st number: 20/42, 2nd number: 1 22/48
20/42 - 70/48 is -55/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
20/42 = 20 × 8/42 × 8 = 160/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
70/48 = 70 × 7/48 × 7 = 490/336 - Subtract the two like fractions:
160/336 - 490/336 = 160 - 490/336 = -330/336 - After reducing the fraction, the answer is -55/56
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