Add 70/36 and 90/80
1st number: 1 34/36, 2nd number: 1 10/80
70/36 + 90/80 is 221/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
70/36 = 70 × 20/36 × 20 = 1400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Add the two like fractions:
1400/720 + 810/720 = 1400 + 810/720 = 2210/720 - 2210/720 simplified gives 221/72
- So, 70/36 + 90/80 = 221/72
In mixed form: 35/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+90/80