Subtract 60/42 from 5/80
1st number: 5/80, 2nd number: 1 18/42
5/80 - 60/42 is -153/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
60/42 = 60 × 40/42 × 40 = 2400/1680 - Subtract the two like fractions:
105/1680 - 2400/1680 = 105 - 2400/1680 = -2295/1680 - After reducing the fraction, the answer is -153/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80-60/42 5/80-60/84 15/80-60/42 25/80-60/42 35/80-60/42