Subtract 42/15 from 3/80
1st number: 3/80, 2nd number: 2 12/15
3/80 - 42/15 is -221/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
3/80 = 3 × 3/80 × 3 = 9/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
42/15 = 42 × 16/15 × 16 = 672/240 - Subtract the two like fractions:
9/240 - 672/240 = 9 - 672/240 = -663/240 - After reducing the fraction, the answer is -221/80
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