Subtract 40/84 from 9/10
9/10 - 40/84 is 89/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
9/10 = 9 × 42/10 × 42 = 378/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
40/84 = 40 × 5/84 × 5 = 200/420 - Subtract the two like fractions:
378/420 - 200/420 = 378 - 200/420 = 178/420 - After reducing the fraction, the answer is 89/210
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