Add 45/90 and 9/40
45/90 + 9/40 is 29/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Add the two like fractions:
180/360 + 81/360 = 180 + 81/360 = 261/360 - 261/360 simplified gives 29/40
- So, 45/90 + 9/40 = 29/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90+18/40 45/90+9/80 45/90+27/40 45/90+45/40 45/90+63/40