Add 70/72 and 30/32
70/72 + 30/32 is 275/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 32 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 72 × 4 = 288,
70/72 = 70 × 4/72 × 4 = 280/288 - Likewise, for the 2nd fraction, since 32 × 9 = 288,
30/32 = 30 × 9/32 × 9 = 270/288 - Add the two like fractions:
280/288 + 270/288 = 280 + 270/288 = 550/288 - 550/288 simplified gives 275/144
- So, 70/72 + 30/32 = 275/144
In mixed form: 1131/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+60/32 70/72+30/64 70/72+90/32 70/72+30/96