Add 80/75 and 70/40
1st number: 1 5/75, 2nd number: 1 30/40
80/75 + 70/40 is 169/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 40 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 75 × 8 = 600,
80/75 = 80 × 8/75 × 8 = 640/600 - Likewise, for the 2nd fraction, since 40 × 15 = 600,
70/40 = 70 × 15/40 × 15 = 1050/600 - Add the two like fractions:
640/600 + 1050/600 = 640 + 1050/600 = 1690/600 - 1690/600 simplified gives 169/60
- So, 80/75 + 70/40 = 169/60
In mixed form: 249/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/75+70/80