Add 98/70 and 15/42
1st number: 1 28/70, 2nd number: 15/42
98/70 + 15/42 is 123/70.
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,
15/42 = 15 × 5/42 × 5 = 75/210 - Add the two like fractions:
294/210 + 75/210 = 294 + 75/210 = 369/210 - 369/210 simplified gives 123/70
- So, 98/70 + 15/42 = 123/70
In mixed form: 153/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70+30/42 98/70+15/84 98/70+45/42 98/70+75/42