Add 30/70 and 7/72
30/70 + 7/72 is 265/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
30/70 = 30 × 36/70 × 36 = 1080/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
7/72 = 7 × 35/72 × 35 = 245/2520 - Add the two like fractions:
1080/2520 + 245/2520 = 1080 + 245/2520 = 1325/2520 - 1325/2520 simplified gives 265/504
- So, 30/70 + 7/72 = 265/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+7/72 30/70+14/72 90/70+7/72 30/70+21/72 30/70+35/72 30/70+49/72