Add 90/45 and 42/48
1st number: 2 0/45, 2nd number: 42/48
90/45 + 42/48 is 23/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
90/45 = 90 × 16/45 × 16 = 1440/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
42/48 = 42 × 15/48 × 15 = 630/720 - Add the two like fractions:
1440/720 + 630/720 = 1440 + 630/720 = 2070/720 - 2070/720 simplified gives 23/8
- So, 90/45 + 42/48 = 23/8
In mixed form: 27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/45+84/48 90/45+42/96