Add 10/4 and 80/21
1st number: 2 2/4, 2nd number: 3 17/21
10/4 + 80/21 is 265/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
10/4 = 10 × 21/4 × 21 = 210/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
80/21 = 80 × 4/21 × 4 = 320/84 - Add the two like fractions:
210/84 + 320/84 = 210 + 320/84 = 530/84 - 530/84 simplified gives 265/42
- So, 10/4 + 80/21 = 265/42
In mixed form: 613/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/4+80/21 10/8+80/21 10/4+80/42 30/4+80/21 10/12+80/21 10/4+80/63 50/4+80/21 10/20+80/21 70/4+80/21 10/28+80/21