Add 9/7 and 12/45
1st number: 1 2/7, 2nd number: 12/45
9/7 + 12/45 is 163/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
9/7 = 9 × 45/7 × 45 = 405/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Add the two like fractions:
405/315 + 84/315 = 405 + 84/315 = 489/315 - 489/315 simplified gives 163/105
- So, 9/7 + 12/45 = 163/105
In mixed form: 158/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+12/45 9/7+24/45 9/14+12/45 9/7+12/90 27/7+12/45 9/7+36/45 9/21+12/45 45/7+12/45 9/7+60/45 9/35+12/45 63/7+12/45 9/7+84/45 9/49+12/45