Add 98/80 and 12/90
1st number: 1 18/80, 2nd number: 12/90
98/80 + 12/90 is 163/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
98/80 = 98 × 9/80 × 9 = 882/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
12/90 = 12 × 8/90 × 8 = 96/720 - Add the two like fractions:
882/720 + 96/720 = 882 + 96/720 = 978/720 - 978/720 simplified gives 163/120
- So, 98/80 + 12/90 = 163/120
In mixed form: 143/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/80+24/90 98/80+36/90 98/80+60/90 98/80+84/90