Add 40/10 and 21/54
1st number: 4 0/10, 2nd number: 21/54
40/10 + 21/54 is 79/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
40/10 = 40 × 27/10 × 27 = 1080/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
1080/270 + 105/270 = 1080 + 105/270 = 1185/270 - 1185/270 simplified gives 79/18
- So, 40/10 + 21/54 = 79/18
In mixed form: 47/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10+21/54 40/10+42/54 40/20+21/54 40/10+63/54 40/30+21/54 40/50+21/54 40/70+21/54