Add 70/80 and 40/10
1st number: 70/80, 2nd number: 4 0/10
70/80 + 40/10 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
70/80 = 70 × 1/80 × 1 = 70/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
40/10 = 40 × 8/10 × 8 = 320/80 - Add the two like fractions:
70/80 + 320/80 = 70 + 320/80 = 390/80 - 390/80 simplified gives 39/8
- So, 70/80 + 40/10 = 39/8
In mixed form: 47/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80+80/10 70/80+40/20 70/80+40/30 70/80+40/50 70/80+40/70