Add 90/70 and 5/84
1st number: 1 20/70, 2nd number: 5/84
90/70 + 5/84 is 113/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Add the two like fractions:
540/420 + 25/420 = 540 + 25/420 = 565/420 - 565/420 simplified gives 113/84
- So, 90/70 + 5/84 = 113/84
In mixed form: 129/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+10/84 90/70+15/84 90/70+25/84 90/70+35/84