Add 98/18 and 80/70
1st number: 5 8/18, 2nd number: 1 10/70
98/18 + 80/70 is 415/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
98/18 = 98 × 35/18 × 35 = 3430/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630 - Add the two like fractions:
3430/630 + 720/630 = 3430 + 720/630 = 4150/630 - 4150/630 simplified gives 415/63
- So, 98/18 + 80/70 = 415/63
In mixed form: 637/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/36+80/70 98/54+80/70 98/90+80/70