Add 4/20 and 40/45
4/20 + 40/45 is 49/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
40/45 = 40 × 4/45 × 4 = 160/180 - Add the two like fractions:
36/180 + 160/180 = 36 + 160/180 = 196/180 - 196/180 simplified gives 49/45
- So, 4/20 + 40/45 = 49/45
In mixed form: 14/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+40/45 4/20+80/45 4/40+40/45 4/20+40/90 12/20+40/45 4/60+40/45 28/20+40/45