Add 15/70 and 10/15
15/70 + 10/15 is 37/42.
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,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
10/15 = 10 × 14/15 × 14 = 140/210 - Add the two like fractions:
45/210 + 140/210 = 45 + 140/210 = 185/210 - 185/210 simplified gives 37/42
- So, 15/70 + 10/15 = 37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70+10/15 15/70+20/15 15/70+10/30 45/70+10/15 15/70+30/15 15/70+10/45 75/70+10/15 15/70+50/15 15/70+10/75 15/70+70/15