Add 84/4 and 80/63
1st number: 21 0/4, 2nd number: 1 17/63
84/4 + 80/63 is 1403/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 4 × 63 = 252,
84/4 = 84 × 63/4 × 63 = 5292/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
80/63 = 80 × 4/63 × 4 = 320/252 - Add the two like fractions:
5292/252 + 320/252 = 5292 + 320/252 = 5612/252 - 5612/252 simplified gives 1403/63
- So, 84/4 + 80/63 = 1403/63
In mixed form: 2217/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+80/63 84/12+80/63 84/20+80/63 84/28+80/63