Add 4/40 and 25/90
4/40 + 25/90 is 17/45.
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,
4/40 = 4 × 9/40 × 9 = 36/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
25/90 = 25 × 4/90 × 4 = 100/360 - Add the two like fractions:
36/360 + 100/360 = 36 + 100/360 = 136/360 - 136/360 simplified gives 17/45
- So, 4/40 + 25/90 = 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+25/90 4/40+50/90 4/80+25/90 12/40+25/90 4/40+75/90 20/40+25/90 28/40+25/90