Add 20/80 and 3/70
20/80 + 3/70 is 41/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
20/80 = 20 × 7/80 × 7 = 140/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
3/70 = 3 × 8/70 × 8 = 24/560 - Add the two like fractions:
140/560 + 24/560 = 140 + 24/560 = 164/560 - 164/560 simplified gives 41/140
- So, 20/80 + 3/70 = 41/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+3/70 20/80+6/70 60/80+3/70 20/80+9/70 20/80+15/70 20/80+21/70