Add 75/6 and 90/72
1st number: 12 3/6, 2nd number: 1 18/72
75/6 + 90/72 is 55/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 6 × 12 = 72,
75/6 = 75 × 12/6 × 12 = 900/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Add the two like fractions:
900/72 + 90/72 = 900 + 90/72 = 990/72 - 990/72 simplified gives 55/4
- So, 75/6 + 90/72 = 55/4
In mixed form: 133/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/12+90/72 75/18+90/72 75/30+90/72 75/42+90/72