Add 12/4 and 90/84
1st number: 3 0/4, 2nd number: 1 6/84
12/4 + 90/84 is 57/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
12/4 = 12 × 21/4 × 21 = 252/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84 - Add the two like fractions:
252/84 + 90/84 = 252 + 90/84 = 342/84 - 342/84 simplified gives 57/14
- So, 12/4 + 90/84 = 57/14
In mixed form: 41/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4+90/84 12/8+90/84 36/4+90/84 60/4+90/84 12/20+90/84 84/4+90/84 12/28+90/84