Subtract 63/70 from 40/84
40/84 - 63/70 is -89/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
40/84 = 40 × 5/84 × 5 = 200/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
63/70 = 63 × 6/70 × 6 = 378/420 - Subtract the two like fractions:
200/420 - 378/420 = 200 - 378/420 = -178/420 - After reducing the fraction, the answer is -89/210
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