Subtract 2/84 from 9/40
9/40 - 2/84 is 169/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
9/40 = 9 × 21/40 × 21 = 189/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
2/84 = 2 × 10/84 × 10 = 20/840 - Subtract the two like fractions:
189/840 - 20/840 = 189 - 20/840 = 169/840
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