Add 54/80 and 25/84
54/80 + 25/84 is 817/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
54/80 = 54 × 21/80 × 21 = 1134/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
25/84 = 25 × 20/84 × 20 = 500/1680 - Add the two like fractions:
1134/1680 + 500/1680 = 1134 + 500/1680 = 1634/1680 - 1634/1680 simplified gives 817/840
- So, 54/80 + 25/84 = 817/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/80+50/84 54/80+75/84