Add 1/2 and 72/90
1/2 + 72/90 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
1/2 = 1 × 45/2 × 45 = 45/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Add the two like fractions:
45/90 + 72/90 = 45 + 72/90 = 117/90 - 117/90 simplified gives 13/10
- So, 1/2 + 72/90 = 13/10
In mixed form: 13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/4+72/90 3/2+72/90 1/6+72/90 5/2+72/90 1/10+72/90 7/2+72/90 1/14+72/90