Add 20/70 and 90/50
1st number: 20/70, 2nd number: 1 40/50
20/70 + 90/50 is 73/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
20/70 = 20 × 5/70 × 5 = 100/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
90/50 = 90 × 7/50 × 7 = 630/350 - Add the two like fractions:
100/350 + 630/350 = 100 + 630/350 = 730/350 - 730/350 simplified gives 73/35
- So, 20/70 + 90/50 = 73/35
In mixed form: 23/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+90/50 60/70+90/50