Add 42/4 and 90/16
1st number: 10 2/4, 2nd number: 5 10/16
42/4 + 90/16 is 129/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
42/4 = 42 × 4/4 × 4 = 168/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
90/16 = 90 × 1/16 × 1 = 90/16 - Add the two like fractions:
168/16 + 90/16 = 168 + 90/16 = 258/16 - 258/16 simplified gives 129/8
- So, 42/4 + 90/16 = 129/8
In mixed form: 161/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4+90/16 42/8+90/16 42/4+90/32 42/12+90/16 42/4+90/48 42/20+90/16 42/4+90/80 42/28+90/16