Add 80/84 and 70/40
1st number: 80/84, 2nd number: 1 30/40
80/84 + 70/40 is 227/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
80/84 = 80 × 10/84 × 10 = 800/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840 - Add the two like fractions:
800/840 + 1470/840 = 800 + 1470/840 = 2270/840 - 2270/840 simplified gives 227/84
- So, 80/84 + 70/40 = 227/84
In mixed form: 259/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84+70/80