Add 90/30 and 40/15
1st number: 3 0/30, 2nd number: 2 10/15
90/30 + 40/15 is 17/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
90/30 = 90 × 1/30 × 1 = 90/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
40/15 = 40 × 2/15 × 2 = 80/30 - Add the two like fractions:
90/30 + 80/30 = 90 + 80/30 = 170/30 - 170/30 simplified gives 17/3
- So, 90/30 + 40/15 = 17/3
In mixed form: 52/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+80/15 90/60+40/15 90/30+40/30 90/30+40/45 90/30+40/75