Subtract 7/8 from 45/72
45/72 - 7/8 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
45/72 = 45 × 1/72 × 1 = 45/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
7/8 = 7 × 9/8 × 9 = 63/72 - Subtract the two like fractions:
45/72 - 63/72 = 45 - 63/72 = -18/72 - After reducing the fraction, the answer is -1/4
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