Add 54/7 and 18/40
1st number: 7 5/7, 2nd number: 18/40
54/7 + 18/40 is 1143/140.
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,
54/7 = 54 × 40/7 × 40 = 2160/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Add the two like fractions:
2160/280 + 126/280 = 2160 + 126/280 = 2286/280 - 2286/280 simplified gives 1143/140
- So, 54/7 + 18/40 = 1143/140
In mixed form: 823/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/7+36/40 54/14+18/40 54/7+18/80 54/7+54/40 54/21+18/40 54/7+90/40 54/35+18/40 54/49+18/40