Subtract 70/75 from 21/60
21/60 - 70/75 is -7/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 60 × 5 = 300,
21/60 = 21 × 5/60 × 5 = 105/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
70/75 = 70 × 4/75 × 4 = 280/300 - Subtract the two like fractions:
105/300 - 280/300 = 105 - 280/300 = -175/300 - After reducing the fraction, the answer is -7/12
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