Add 45/35 and 20/84
1st number: 1 10/35, 2nd number: 20/84
45/35 + 20/84 is 32/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
45/35 = 45 × 12/35 × 12 = 540/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Add the two like fractions:
540/420 + 100/420 = 540 + 100/420 = 640/420 - 640/420 simplified gives 32/21
- So, 45/35 + 20/84 = 32/21
In mixed form: 111/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35+20/84 45/35+40/84 45/70+20/84 45/35+60/84