Add 42/63 and 90/28
1st number: 42/63, 2nd number: 3 6/28
42/63 + 90/28 is 163/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
42/63 = 42 × 4/63 × 4 = 168/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252 - Add the two like fractions:
168/252 + 810/252 = 168 + 810/252 = 978/252 - 978/252 simplified gives 163/42
- So, 42/63 + 90/28 = 163/42
In mixed form: 337/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+90/28 42/63+90/56 42/63+90/84