Add 90/18 and 98/70
1st number: 5 0/18, 2nd number: 1 28/70
90/18 + 98/70 is 32/5.
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,
90/18 = 90 × 35/18 × 35 = 3150/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
98/70 = 98 × 9/70 × 9 = 882/630 - Add the two like fractions:
3150/630 + 882/630 = 3150 + 882/630 = 4032/630 - 4032/630 simplified gives 32/5
- So, 90/18 + 98/70 = 32/5
In mixed form: 62/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+98/70 90/54+98/70