Add 12/45 and 50/70
12/45 + 50/70 is 103/105.
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,
12/45 = 12 × 14/45 × 14 = 168/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
50/70 = 50 × 9/70 × 9 = 450/630 - Add the two like fractions:
168/630 + 450/630 = 168 + 450/630 = 618/630 - 618/630 simplified gives 103/105
- So, 12/45 + 50/70 = 103/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45+50/70 12/90+50/70 36/45+50/70 60/45+50/70 84/45+50/70