Add 12/45 and 5/7
12/45 + 5/7 is 103/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
5/7 = 5 × 45/7 × 45 = 225/315 - Add the two like fractions:
84/315 + 225/315 = 84 + 225/315 = 309/315 - 309/315 simplified gives 103/105
- So, 12/45 + 5/7 = 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+5/7 12/45+10/7 12/90+5/7 12/45+5/14 36/45+5/7 12/45+15/7 12/45+5/21 60/45+5/7 12/45+25/7 12/45+5/35 84/45+5/7 12/45+35/7 12/45+5/49