Subtract 7/8 from 4/5
45 - 78 is -340.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
45 = 4 × 85 × 8 = 3240 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
78 = 7 × 58 × 5 = 3540 - Subtract the two like fractions:
3240 - 3540 = 32 - 3540 = -340
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