Add 4/7 and 70/80
4/7 + 70/80 is 81/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
4/7 = 4 × 80/7 × 80 = 320/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
70/80 = 70 × 7/80 × 7 = 490/560 - Add the two like fractions:
320/560 + 490/560 = 320 + 490/560 = 810/560 - 810/560 simplified gives 81/56
- So, 4/7 + 70/80 = 81/56
In mixed form: 125/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7+70/80 4/14+70/80 12/7+70/80 4/21+70/80 20/7+70/80 4/35+70/80 28/7+70/80 4/49+70/80