Add 30/84 and 12/45
30/84 + 12/45 is 131/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
30/84 = 30 × 15/84 × 15 = 450/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
12/45 = 12 × 28/45 × 28 = 336/1260 - Add the two like fractions:
450/1260 + 336/1260 = 450 + 336/1260 = 786/1260 - 786/1260 simplified gives 131/210
- So, 30/84 + 12/45 = 131/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+12/45 30/84+24/45 30/84+12/90 90/84+12/45 30/84+36/45 30/84+60/45 30/84+84/45