Add 3/7 and 80/45
1st number: 3/7, 2nd number: 1 35/45
3/7 + 80/45 is 139/63.
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,
3/7 = 3 × 45/7 × 45 = 135/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
80/45 = 80 × 7/45 × 7 = 560/315 - Add the two like fractions:
135/315 + 560/315 = 135 + 560/315 = 695/315 - 695/315 simplified gives 139/63
- So, 3/7 + 80/45 = 139/63
In mixed form: 213/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+80/45 3/14+80/45 3/7+80/90 9/7+80/45 3/21+80/45 15/7+80/45 3/35+80/45 21/7+80/45 3/49+80/45