Add 54/70 and 12/84
54/70 + 12/84 is 32/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
54/70 = 54 × 6/70 × 6 = 324/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Add the two like fractions:
324/420 + 60/420 = 324 + 60/420 = 384/420 - 384/420 simplified gives 32/35
- So, 54/70 + 12/84 = 32/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/70+24/84 54/70+36/84 54/70+60/84