Add 18/70 and 98/40
1st number: 18/70, 2nd number: 2 18/40
18/70 + 98/40 is 379/140.
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,
18/70 = 18 × 4/70 × 4 = 72/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
98/40 = 98 × 7/40 × 7 = 686/280 - Add the two like fractions:
72/280 + 686/280 = 72 + 686/280 = 758/280 - 758/280 simplified gives 379/140
- So, 18/70 + 98/40 = 379/140
In mixed form: 299/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70+98/40 18/70+98/80 54/70+98/40 90/70+98/40