Add 90/56 and 18/30
1st number: 1 34/56, 2nd number: 18/30
90/56 + 18/30 is 309/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
90/56 = 90 × 15/56 × 15 = 1350/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
18/30 = 18 × 28/30 × 28 = 504/840 - Add the two like fractions:
1350/840 + 504/840 = 1350 + 504/840 = 1854/840 - 1854/840 simplified gives 309/140
- So, 90/56 + 18/30 = 309/140
In mixed form: 229/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56+36/30 90/56+18/60 90/56+54/30 90/56+18/90 90/56+90/30