Add 4/30 and 90/7
1st number: 4/30, 2nd number: 12 6/7
4/30 + 90/7 is 1364/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
4/30 = 4 × 7/30 × 7 = 28/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
90/7 = 90 × 30/7 × 30 = 2700/210 - Add the two like fractions:
28/210 + 2700/210 = 28 + 2700/210 = 2728/210 - 2728/210 simplified gives 1364/105
- So, 4/30 + 90/7 = 1364/105
In mixed form: 12104/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30+90/7 4/60+90/7 4/30+90/14 12/30+90/7 4/90+90/7 4/30+90/21 20/30+90/7 4/30+90/35 28/30+90/7 4/30+90/49