Add 90/72 and 7/4
1st number: 1 18/72, 2nd number: 1 3/4
90/72 + 7/4 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 4 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Likewise, for the 2nd fraction, since 4 × 18 = 72,
7/4 = 7 × 18/4 × 18 = 126/72 - Add the two like fractions:
90/72 + 126/72 = 90 + 126/72 = 216/72 - 216/72 simplified gives 3/1
- So, 90/72 + 7/4 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+14/4 90/72+7/8 90/72+21/4 90/72+7/12 90/72+35/4 90/72+7/20 90/72+49/4 90/72+7/28