Add 80/4 and 45/7
1st number: 20 0/4, 2nd number: 6 3/7
80/4 + 45/7 is 185/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
80/4 = 80 × 7/4 × 7 = 560/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
45/7 = 45 × 4/7 × 4 = 180/28 - Add the two like fractions:
560/28 + 180/28 = 560 + 180/28 = 740/28 - 740/28 simplified gives 185/7
- So, 80/4 + 45/7 = 185/7
In mixed form: 263/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/4+90/7 80/8+45/7 80/4+45/14 80/12+45/7 80/4+45/21 80/20+45/7 80/4+45/35 80/28+45/7 80/4+45/49