Subtract 70/16 from 75/21
1st number: 3 12/21, 2nd number: 4 6/16
75/21 - 70/16 is -45/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
75/21 = 75 × 16/21 × 16 = 1200/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
70/16 = 70 × 21/16 × 21 = 1470/336 - Subtract the two like fractions:
1200/336 - 1470/336 = 1200 - 1470/336 = -270/336 - After reducing the fraction, the answer is -45/56
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