Add 72/12 and 90/72
1st number: 6 0/12, 2nd number: 1 18/72
72/12 + 90/72 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
72/12 = 72 × 6/12 × 6 = 432/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Add the two like fractions:
432/72 + 90/72 = 432 + 90/72 = 522/72 - 522/72 simplified gives 29/4
- So, 72/12 + 90/72 = 29/4
In mixed form: 71/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/24+90/72 72/36+90/72 72/60+90/72 72/84+90/72