Add 15/45 and 15/70
15/45 + 15/70 is 23/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
15/45 = 15 × 14/45 × 14 = 210/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Add the two like fractions:
210/630 + 135/630 = 210 + 135/630 = 345/630 - 345/630 simplified gives 23/42
- So, 15/45 + 15/70 = 23/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+15/70 15/45+30/70 15/90+15/70 15/45+45/70 75/45+15/70 15/45+75/70