Subtract 18/70 from 4/60
4/60 - 18/70 is -4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
4/60 = 4 × 7/60 × 7 = 28/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
18/70 = 18 × 6/70 × 6 = 108/420 - Subtract the two like fractions:
28/420 - 108/420 = 28 - 108/420 = -80/420 - After reducing the fraction, the answer is -4/21
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