Add 3/56 and 90/70
1st number: 3/56, 2nd number: 1 20/70
3/56 + 90/70 is 75/56.
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,
3/56 = 3 × 5/56 × 5 = 15/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Add the two like fractions:
15/280 + 360/280 = 15 + 360/280 = 375/280 - 375/280 simplified gives 75/56
- So, 3/56 + 90/70 = 75/56
In mixed form: 119/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/56+90/70 9/56+90/70 15/56+90/70 21/56+90/70