Add 42/18 and 70/20
1st number: 2 6/18, 2nd number: 3 10/20
42/18 + 70/20 is 35/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
42/18 = 42 × 10/18 × 10 = 420/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Add the two like fractions:
420/180 + 630/180 = 420 + 630/180 = 1050/180 - 1050/180 simplified gives 35/6
- So, 42/18 + 70/20 = 35/6
In mixed form: 55/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+70/20 42/36+70/20 42/18+70/40 42/54+70/20 42/18+70/60 42/90+70/20