Add 18/70 and 10/80
18/70 + 10/80 is 107/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
18/70 = 18 × 8/70 × 8 = 144/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
10/80 = 10 × 7/80 × 7 = 70/560 - Add the two like fractions:
144/560 + 70/560 = 144 + 70/560 = 214/560 - 214/560 simplified gives 107/280
- So, 18/70 + 10/80 = 107/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70+10/80 18/70+20/80 54/70+10/80 18/70+30/80 90/70+10/80 18/70+50/80 18/70+70/80