Add 45/40 and 18/98
1st number: 1 5/40, 2nd number: 18/98
45/40 + 18/98 is 513/392.
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,
45/40 = 45 × 49/40 × 49 = 2205/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
18/98 = 18 × 20/98 × 20 = 360/1960 - Add the two like fractions:
2205/1960 + 360/1960 = 2205 + 360/1960 = 2565/1960 - 2565/1960 simplified gives 513/392
- So, 45/40 + 18/98 = 513/392
In mixed form: 1121/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+18/98 45/40+36/98 45/80+18/98 45/40+54/98 45/40+90/98