Subtract 15/16 from 40/45
40/45 - 15/16 is -7/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
40/45 = 40 × 16/45 × 16 = 640/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
15/16 = 15 × 45/16 × 45 = 675/720 - Subtract the two like fractions:
640/720 - 675/720 = 640 - 675/720 = -35/720 - After reducing the fraction, the answer is -7/144
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