Add 54/84 and 4/90
54/84 + 4/90 is 433/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
54/84 = 54 × 15/84 × 15 = 810/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
4/90 = 4 × 14/90 × 14 = 56/1260 - Add the two like fractions:
810/1260 + 56/1260 = 810 + 56/1260 = 866/1260 - 866/1260 simplified gives 433/630
- So, 54/84 + 4/90 = 433/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+8/90 54/84+12/90 54/84+20/90 54/84+28/90