Subtract 63/8 from 45/7
1st number: 6 3/7, 2nd number: 7 7/8
45/7 - 63/8 is -81/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
45/7 = 45 × 8/7 × 8 = 360/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
63/8 = 63 × 7/8 × 7 = 441/56 - Subtract the two like fractions:
360/56 - 441/56 = 360 - 441/56 = -81/56
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