Add 90/72 and 70/16
1st number: 1 18/72, 2nd number: 4 6/16
90/72 + 70/16 is 45/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
90/72 = 90 × 2/72 × 2 = 180/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
70/16 = 70 × 9/16 × 9 = 630/144 - Add the two like fractions:
180/144 + 630/144 = 180 + 630/144 = 810/144 - 810/144 simplified gives 45/8
- So, 90/72 + 70/16 = 45/8
In mixed form: 55/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+70/32 90/72+70/48 90/72+70/80