Subtract 7/40 from 1/84
1/84 - 7/40 is -137/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
1/84 = 1 × 10/84 × 10 = 10/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
7/40 = 7 × 21/40 × 21 = 147/840 - Subtract the two like fractions:
10/840 - 147/840 = 10 - 147/840 = -137/840
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