Add 70/80 and 7/10
70/80 + 7/10 is 63/40.
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,
7/10 = 7 × 8/10 × 8 = 56/80 - Add the two like fractions:
70/80 + 56/80 = 70 + 56/80 = 126/80 - 126/80 simplified gives 63/40
- So, 70/80 + 7/10 = 63/40
In mixed form: 123/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80+14/10 70/80+7/20 70/80+21/10 70/80+7/30 70/80+35/10 70/80+7/50 70/80+49/10 70/80+7/70