Add 5/80 and 30/70
5/80 + 30/70 is 55/112.
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,
5/80 = 5 × 7/80 × 7 = 35/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
30/70 = 30 × 8/70 × 8 = 240/560 - Add the two like fractions:
35/560 + 240/560 = 35 + 240/560 = 275/560 - 275/560 simplified gives 55/112
- So, 5/80 + 30/70 = 55/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80+30/70 5/80+60/70 15/80+30/70 5/80+90/70 25/80+30/70 35/80+30/70