Add 7/30 and 90/20
1st number: 7/30, 2nd number: 4 10/20
7/30 + 90/20 is 71/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
7/30 = 7 × 2/30 × 2 = 14/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
90/20 = 90 × 3/20 × 3 = 270/60 - Add the two like fractions:
14/60 + 270/60 = 14 + 270/60 = 284/60 - 284/60 simplified gives 71/15
- So, 7/30 + 90/20 = 71/15
In mixed form: 411/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+90/20 7/60+90/20 7/30+90/40 21/30+90/20 7/90+90/20 7/30+90/60 35/30+90/20 49/30+90/20