Add 8/70 and 30/80
8/70 + 30/80 is 137/280.
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,
8/70 = 8 × 8/70 × 8 = 64/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Add the two like fractions:
64/560 + 210/560 = 64 + 210/560 = 274/560 - 274/560 simplified gives 137/280
- So, 8/70 + 30/80 = 137/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70+30/80 8/70+60/80 24/70+30/80 8/70+90/80 40/70+30/80 56/70+30/80