Add 12/30 and 54/80
12/30 + 54/80 is 43/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
12/30 = 12 × 8/30 × 8 = 96/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
54/80 = 54 × 3/80 × 3 = 162/240 - Add the two like fractions:
96/240 + 162/240 = 96 + 162/240 = 258/240 - 258/240 simplified gives 43/40
- So, 12/30 + 54/80 = 43/40
In mixed form: 13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+54/80 12/60+54/80 36/30+54/80 12/90+54/80 60/30+54/80 84/30+54/80