Add 80/4 and 4/90
1st number: 20 0/4, 2nd number: 4/90
80/4 + 4/90 is 902/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
80/4 = 80 × 45/4 × 45 = 3600/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
4/90 = 4 × 2/90 × 2 = 8/180 - Add the two like fractions:
3600/180 + 8/180 = 3600 + 8/180 = 3608/180 - 3608/180 simplified gives 902/45
- So, 80/4 + 4/90 = 902/45
In mixed form: 202/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/4+8/90 80/8+4/90 80/4+12/90 80/12+4/90 80/4+20/90 80/20+4/90 80/4+28/90 80/28+4/90