Subtract 70/48 from 20/21
1st number: 20/21, 2nd number: 1 22/48
20/21 - 70/48 is -85/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
20/21 = 20 × 16/21 × 16 = 320/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
70/48 = 70 × 7/48 × 7 = 490/336 - Subtract the two like fractions:
320/336 - 490/336 = 320 - 490/336 = -170/336 - After reducing the fraction, the answer is -85/168
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