Subtract 21/24 from 27/70
27/70 - 21/24 is -137/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
27/70 = 27 × 12/70 × 12 = 324/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
21/24 = 21 × 35/24 × 35 = 735/840 - Subtract the two like fractions:
324/840 - 735/840 = 324 - 735/840 = -411/840 - After reducing the fraction, the answer is -137/280
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