Add 90/84 and 75/40
1st number: 1 6/84, 2nd number: 1 35/40
90/84 + 75/40 is 165/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
90/84 = 90 × 10/84 × 10 = 900/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
75/40 = 75 × 21/40 × 21 = 1575/840 - Add the two like fractions:
900/840 + 1575/840 = 900 + 1575/840 = 2475/840 - 2475/840 simplified gives 165/56
- So, 90/84 + 75/40 = 165/56
In mixed form: 253/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+75/80