Add 90/12 and 10/28
1st number: 7 6/12, 2nd number: 10/28
90/12 + 10/28 is 55/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
10/28 = 10 × 3/28 × 3 = 30/84 - Add the two like fractions:
630/84 + 30/84 = 630 + 30/84 = 660/84 - 660/84 simplified gives 55/7
- So, 90/12 + 10/28 = 55/7
In mixed form: 76/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+20/28 90/24+10/28 90/12+10/56 90/12+30/28 90/36+10/28 90/12+10/84 90/12+50/28 90/60+10/28 90/12+70/28 90/84+10/28