Add 90/16 and 70/18
1st number: 5 10/16, 2nd number: 3 16/18
90/16 + 70/18 is 685/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
90/16 = 90 × 9/16 × 9 = 810/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
70/18 = 70 × 8/18 × 8 = 560/144 - Add the two like fractions:
810/144 + 560/144 = 810 + 560/144 = 1370/144 - 1370/144 simplified gives 685/72
- So, 90/16 + 70/18 = 685/72
In mixed form: 937/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/32+70/18 90/16+70/36 90/48+70/18 90/16+70/54 90/80+70/18 90/16+70/90