Add 30/56 and 90/70
1st number: 30/56, 2nd number: 1 20/70
30/56 + 90/70 is 51/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
30/56 = 30 × 5/56 × 5 = 150/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Add the two like fractions:
150/280 + 360/280 = 150 + 360/280 = 510/280 - 510/280 simplified gives 51/28
- So, 30/56 + 90/70 = 51/28
In mixed form: 123/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56+90/70 90/56+90/70