Add 98/70 and 20/42
1st number: 1 28/70, 2nd number: 20/42
98/70 + 20/42 is 197/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
98/70 = 98 × 3/70 × 3 = 294/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
294/210 + 100/210 = 294 + 100/210 = 394/210 - 394/210 simplified gives 197/105
- So, 98/70 + 20/42 = 197/105
In mixed form: 192/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70+40/42 98/70+20/84 98/70+60/42