Subtract 70/21 from 40/48
1st number: 40/48, 2nd number: 3 7/21
40/48 - 70/21 is -5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
40/48 = 40 × 7/48 × 7 = 280/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
70/21 = 70 × 16/21 × 16 = 1120/336 - Subtract the two like fractions:
280/336 - 1120/336 = 280 - 1120/336 = -840/336 - After reducing the fraction, the answer is -5/2
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