Add 30/70 and 7/15
30/70 + 7/15 is 94/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
7/15 = 7 × 14/15 × 14 = 98/210 - Add the two like fractions:
90/210 + 98/210 = 90 + 98/210 = 188/210 - 188/210 simplified gives 94/105
- So, 30/70 + 7/15 = 94/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+7/15 30/70+14/15 30/70+7/30 90/70+7/15 30/70+21/15 30/70+7/45 30/70+35/15 30/70+7/75 30/70+49/15