Subtract 40/70 from 15/36
15/36 - 40/70 is -13/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
15/36 = 15 × 35/36 × 35 = 525/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
40/70 = 40 × 18/70 × 18 = 720/1260 - Subtract the two like fractions:
525/1260 - 720/1260 = 525 - 720/1260 = -195/1260 - After reducing the fraction, the answer is -13/84
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