Add 36/84 and 20/45
36/84 + 20/45 is 55/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
36/84 = 36 × 15/84 × 15 = 540/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
20/45 = 20 × 28/45 × 28 = 560/1260 - Add the two like fractions:
540/1260 + 560/1260 = 540 + 560/1260 = 1100/1260 - 1100/1260 simplified gives 55/63
- So, 36/84 + 20/45 = 55/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+20/45 36/84+40/45 36/84+20/90 36/84+60/45