Add 64/4 and 42/90
1st number: 16 0/4, 2nd number: 42/90
64/4 + 42/90 is 247/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
64/4 = 64 × 45/4 × 45 = 2880/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
2880/180 + 84/180 = 2880 + 84/180 = 2964/180 - 2964/180 simplified gives 247/15
- So, 64/4 + 42/90 = 247/15
In mixed form: 167/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/4+84/90 64/8+42/90 64/12+42/90 64/20+42/90 64/28+42/90