Add 90/70 and 49/56
1st number: 1 20/70, 2nd number: 49/56
90/70 + 49/56 is 121/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
49/56 = 49 × 5/56 × 5 = 245/280 - Add the two like fractions:
360/280 + 245/280 = 360 + 245/280 = 605/280 - 605/280 simplified gives 121/56
- So, 90/70 + 49/56 = 121/56
In mixed form: 29/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+98/56