Add 98/70 and 9/40
1st number: 1 28/70, 2nd number: 9/40
98/70 + 9/40 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
98/70 = 98 × 4/70 × 4 = 392/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Add the two like fractions:
392/280 + 63/280 = 392 + 63/280 = 455/280 - 455/280 simplified gives 13/8
- So, 98/70 + 9/40 = 13/8
In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70+18/40 98/70+9/80 98/70+27/40 98/70+45/40 98/70+63/40