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