Add 80/18 and 20/63
1st number: 4 8/18, 2nd number: 20/63
80/18 + 20/63 is 100/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
80/18 = 80 × 7/18 × 7 = 560/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126 - Add the two like fractions:
560/126 + 40/126 = 560 + 40/126 = 600/126 - 600/126 simplified gives 100/21
- So, 80/18 + 20/63 = 100/21
In mixed form: 416/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+40/63 80/36+20/63 80/18+60/63 80/54+20/63 80/90+20/63