Add 36/30 and 90/21
1st number: 1 6/30, 2nd number: 4 6/21
36/30 + 90/21 is 192/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
36/30 = 36 × 7/30 × 7 = 252/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
90/21 = 90 × 10/21 × 10 = 900/210 - Add the two like fractions:
252/210 + 900/210 = 252 + 900/210 = 1152/210 - 1152/210 simplified gives 192/35
- So, 36/30 + 90/21 = 192/35
In mixed form: 517/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+90/21 36/60+90/21 36/30+90/42 36/90+90/21 36/30+90/63