Add 12/7 and 45/80
1st number: 1 5/7, 2nd number: 45/80
12/7 + 45/80 is 255/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
12/7 = 12 × 80/7 × 80 = 960/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Add the two like fractions:
960/560 + 315/560 = 960 + 315/560 = 1275/560 - 1275/560 simplified gives 255/112
- So, 12/7 + 45/80 = 255/112
In mixed form: 231/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7+45/80 12/7+90/80 12/14+45/80 36/7+45/80 12/21+45/80 60/7+45/80 12/35+45/80 84/7+45/80 12/49+45/80