Add 90/4 and 12/72
1st number: 22 2/4, 2nd number: 12/72
90/4 + 12/72 is 68/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
90/4 = 90 × 18/4 × 18 = 1620/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
12/72 = 12 × 1/72 × 1 = 12/72 - Add the two like fractions:
1620/72 + 12/72 = 1620 + 12/72 = 1632/72 - 1632/72 simplified gives 68/3
- So, 90/4 + 12/72 = 68/3
In mixed form: 222/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+24/72 90/8+12/72 90/4+36/72 90/12+12/72 90/4+60/72 90/20+12/72 90/4+84/72 90/28+12/72