Add 9/40 and 75/90
9/40 + 75/90 is 127/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
75/90 = 75 × 4/90 × 4 = 300/360 - Add the two like fractions:
81/360 + 300/360 = 81 + 300/360 = 381/360 - 381/360 simplified gives 127/120
- So, 9/40 + 75/90 = 127/120
In mixed form: 17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+75/90 9/80+75/90 27/40+75/90 45/40+75/90 63/40+75/90