Subtract 40/48 from 15/70
15/70 - 40/48 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
15/70 = 15 × 24/70 × 24 = 360/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
40/48 = 40 × 35/48 × 35 = 1400/1680 - Subtract the two like fractions:
360/1680 - 1400/1680 = 360 - 1400/1680 = -1040/1680 - After reducing the fraction, the answer is -13/21
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