Subtract 70/75 from 21/28
21/28 - 70/75 is -11/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
21/28 = 21 × 75/28 × 75 = 1575/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
70/75 = 70 × 28/75 × 28 = 1960/2100 - Subtract the two like fractions:
1575/2100 - 1960/2100 = 1575 - 1960/2100 = -385/2100 - After reducing the fraction, the answer is -11/60
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