Add 12/10 and 90/84
1st number: 1 2/10, 2nd number: 1 6/84
12/10 + 90/84 is 159/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
12/10 = 12 × 42/10 × 42 = 504/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Add the two like fractions:
504/420 + 450/420 = 504 + 450/420 = 954/420 - 954/420 simplified gives 159/70
- So, 12/10 + 90/84 = 159/70
In mixed form: 219/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10+90/84 12/20+90/84 36/10+90/84 12/30+90/84 60/10+90/84 12/50+90/84 84/10+90/84 12/70+90/84