Add 90/40 and 45/3
1st number: 2 10/40, 2nd number: 15 0/3
90/40 + 45/3 is 69/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
45/3 = 45 × 40/3 × 40 = 1800/120 - Add the two like fractions:
270/120 + 1800/120 = 270 + 1800/120 = 2070/120 - 2070/120 simplified gives 69/4
- So, 90/40 + 45/3 = 69/4
In mixed form: 171/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+90/3 90/80+45/3 90/40+45/6 90/40+45/9 90/40+45/15 90/40+45/21