Add 18/45 and 30/84
18/45 + 30/84 is 53/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
18/45 = 18 × 28/45 × 28 = 504/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
30/84 = 30 × 15/84 × 15 = 450/1260 - Add the two like fractions:
504/1260 + 450/1260 = 504 + 450/1260 = 954/1260 - 954/1260 simplified gives 53/70
- So, 18/45 + 30/84 = 53/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+30/84 18/45+60/84 18/90+30/84 54/45+30/84 18/45+90/84 90/45+30/84