Add 1/40 and 20/90
1/40 + 20/90 is 89/360.
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,
1/40 = 1 × 9/40 × 9 = 9/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Add the two like fractions:
9/360 + 80/360 = 9 + 80/360 = 89/360 - So, 1/40 + 20/90 = 89/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+20/90 1/40+40/90 1/80+20/90 3/40+20/90 1/40+60/90 5/40+20/90 7/40+20/90