Add 90/12 and 16/90
1st number: 7 6/12, 2nd number: 16/90
90/12 + 16/90 is 691/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
90/12 = 90 × 15/12 × 15 = 1350/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
16/90 = 16 × 2/90 × 2 = 32/180 - Add the two like fractions:
1350/180 + 32/180 = 1350 + 32/180 = 1382/180 - 1382/180 simplified gives 691/90
- So, 90/12 + 16/90 = 691/90
In mixed form: 761/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+32/90 90/24+16/90 90/12+48/90 90/36+16/90 90/12+80/90 90/60+16/90 90/84+16/90