Add 18/80 and 12/30
18/80 + 12/30 is 5/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
18/80 = 18 × 3/80 × 3 = 54/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
12/30 = 12 × 8/30 × 8 = 96/240 - Add the two like fractions:
54/240 + 96/240 = 54 + 96/240 = 150/240 - 150/240 simplified gives 5/8
- So, 18/80 + 12/30 = 5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/80+12/30 18/80+24/30 18/80+12/60 54/80+12/30 18/80+36/30 18/80+12/90 90/80+12/30 18/80+60/30 18/80+84/30