Add 42/16 and 90/45
1st number: 2 10/16, 2nd number: 2 0/45
42/16 + 90/45 is 37/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
42/16 = 42 × 45/16 × 45 = 1890/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
90/45 = 90 × 16/45 × 16 = 1440/720 - Add the two like fractions:
1890/720 + 1440/720 = 1890 + 1440/720 = 3330/720 - 3330/720 simplified gives 37/8
- So, 42/16 + 90/45 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+90/45 42/32+90/45 42/48+90/45 42/80+90/45