Add 50/56 and 18/90
50/56 + 18/90 is 153/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
50/56 = 50 × 45/56 × 45 = 2250/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
18/90 = 18 × 28/90 × 28 = 504/2520 - Add the two like fractions:
2250/2520 + 504/2520 = 2250 + 504/2520 = 2754/2520 - 2754/2520 simplified gives 153/140
- So, 50/56 + 18/90 = 153/140
In mixed form: 113/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/56+36/90 50/56+54/90