Subtract 40/54 from 15/70
15/70 - 40/54 is -199/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
15/70 = 15 × 27/70 × 27 = 405/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
40/54 = 40 × 35/54 × 35 = 1400/1890 - Subtract the two like fractions:
405/1890 - 1400/1890 = 405 - 1400/1890 = -995/1890 - After reducing the fraction, the answer is -199/378
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