Add 20/4 and 45/63
1st number: 5 0/4, 2nd number: 45/63
20/4 + 45/63 is 40/7.
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,
20/4 = 20 × 63/4 × 63 = 1260/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
45/63 = 45 × 4/63 × 4 = 180/252 - Add the two like fractions:
1260/252 + 180/252 = 1260 + 180/252 = 1440/252 - 1440/252 simplified gives 40/7
- So, 20/4 + 45/63 = 40/7
In mixed form: 55/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+45/63 20/4+90/63 20/8+45/63 60/4+45/63 20/12+45/63 20/28+45/63