Add 3/40 and 84/98
3/40 + 84/98 is 261/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
3/40 = 3 × 49/40 × 49 = 147/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
84/98 = 84 × 20/98 × 20 = 1680/1960 - Add the two like fractions:
147/1960 + 1680/1960 = 147 + 1680/1960 = 1827/1960 - 1827/1960 simplified gives 261/280
- So, 3/40 + 84/98 = 261/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+84/98 3/80+84/98 9/40+84/98 15/40+84/98 21/40+84/98