Add 90/30 and 98/80
1st number: 3 0/30, 2nd number: 1 18/80
90/30 + 98/80 is 169/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
90/30 = 90 × 8/30 × 8 = 720/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
98/80 = 98 × 3/80 × 3 = 294/240 - Add the two like fractions:
720/240 + 294/240 = 720 + 294/240 = 1014/240 - 1014/240 simplified gives 169/40
- So, 90/30 + 98/80 = 169/40
In mixed form: 49/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+98/80