Add 18/84 and 54/35
1st number: 18/84, 2nd number: 1 19/35
18/84 + 54/35 is 123/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
54/35 = 54 × 12/35 × 12 = 648/420 - Add the two like fractions:
90/420 + 648/420 = 90 + 648/420 = 738/420 - 738/420 simplified gives 123/70
- So, 18/84 + 54/35 = 123/70
In mixed form: 153/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+54/35 18/84+54/70 54/84+54/35 90/84+54/35