Add 15/70 and 18/60
15/70 + 18/60 is 18/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Add the two like fractions:
90/420 + 126/420 = 90 + 126/420 = 216/420 - 216/420 simplified gives 18/35
- So, 15/70 + 18/60 = 18/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70+18/60 15/70+36/60 45/70+18/60 15/70+54/60 75/70+18/60 15/70+90/60