Add 84/20 and 12/56
1st number: 4 4/20, 2nd number: 12/56
84/20 + 12/56 is 309/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
84/20 = 84 × 14/20 × 14 = 1176/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
12/56 = 12 × 5/56 × 5 = 60/280 - Add the two like fractions:
1176/280 + 60/280 = 1176 + 60/280 = 1236/280 - 1236/280 simplified gives 309/70
- So, 84/20 + 12/56 = 309/70
In mixed form: 429/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+24/56 84/40+12/56 84/20+36/56 84/60+12/56 84/20+60/56 84/20+84/56