Add 45/2 and 72/40
1st number: 22 1/2, 2nd number: 1 32/40
45/2 + 72/40 is 243/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
45/2 = 45 × 20/2 × 20 = 900/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
72/40 = 72 × 1/40 × 1 = 72/40 - Add the two like fractions:
900/40 + 72/40 = 900 + 72/40 = 972/40 - 972/40 simplified gives 243/10
- So, 45/2 + 72/40 = 243/10
In mixed form: 243/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2+72/40 45/4+72/40 45/2+72/80 45/6+72/40 45/10+72/40 45/14+72/40