Add 45/7 and 27/40
1st number: 6 3/7, 2nd number: 27/40
45/7 + 27/40 is 1989/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
45/7 = 45 × 40/7 × 40 = 1800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
27/40 = 27 × 7/40 × 7 = 189/280 - Add the two like fractions:
1800/280 + 189/280 = 1800 + 189/280 = 1989/280 - So, 45/7 + 27/40 = 1989/280
In mixed form: 729/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+27/40 45/7+54/40 45/14+27/40 45/7+27/80 45/7+81/40 45/21+27/40 45/35+27/40 45/49+27/40