Add 60/70 and 90/20
1st number: 60/70, 2nd number: 4 10/20
60/70 + 90/20 is 75/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
60/70 = 60 × 2/70 × 2 = 120/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
90/20 = 90 × 7/20 × 7 = 630/140 - Add the two like fractions:
120/140 + 630/140 = 120 + 630/140 = 750/140 - 750/140 simplified gives 75/14
- So, 60/70 + 90/20 = 75/14
In mixed form: 55/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+90/40 60/70+90/60