Add 90/42 and 16/90
1st number: 2 6/42, 2nd number: 16/90
90/42 + 16/90 is 731/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
16/90 = 16 × 7/90 × 7 = 112/630 - Add the two like fractions:
1350/630 + 112/630 = 1350 + 112/630 = 1462/630 - 1462/630 simplified gives 731/315
- So, 90/42 + 16/90 = 731/315
In mixed form: 2101/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+32/90 90/84+16/90 90/42+48/90 90/42+80/90