Add 90/42 and 72/32
1st number: 2 6/42, 2nd number: 2 8/32
90/42 + 72/32 is 123/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 42 × 16 = 672,
90/42 = 90 × 16/42 × 16 = 1440/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
72/32 = 72 × 21/32 × 21 = 1512/672 - Add the two like fractions:
1440/672 + 1512/672 = 1440 + 1512/672 = 2952/672 - 2952/672 simplified gives 123/28
- So, 90/42 + 72/32 = 123/28
In mixed form: 411/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+72/32 90/42+72/64 90/42+72/96