Add 98/42 and 90/70
1st number: 2 14/42, 2nd number: 1 20/70
98/42 + 90/70 is 76/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
98/42 = 98 × 5/42 × 5 = 490/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Add the two like fractions:
490/210 + 270/210 = 490 + 270/210 = 760/210 - 760/210 simplified gives 76/21
- So, 98/42 + 90/70 = 76/21
In mixed form: 313/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/84+90/70