Subtract 49/80 from 4/81
4/81 - 49/80 is -3649/6480.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
4/81 = 4 × 80/81 × 80 = 320/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
49/80 = 49 × 81/80 × 81 = 3969/6480 - Subtract the two like fractions:
320/6480 - 3969/6480 = 320 - 3969/6480 = -3649/6480
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