Add 72/4 and 90/80
1st number: 18 0/4, 2nd number: 1 10/80
72/4 + 90/80 is 153/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
72/4 = 72 × 20/4 × 20 = 1440/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Add the two like fractions:
1440/80 + 90/80 = 1440 + 90/80 = 1530/80 - 1530/80 simplified gives 153/8
- So, 72/4 + 90/80 = 153/8
In mixed form: 191/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/8+90/80 72/12+90/80 72/20+90/80 72/28+90/80