Add 50/12 and 90/7
1st number: 4 2/12, 2nd number: 12 6/7
50/12 + 90/7 is 715/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
50/12 = 50 × 7/12 × 7 = 350/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
90/7 = 90 × 12/7 × 12 = 1080/84 - Add the two like fractions:
350/84 + 1080/84 = 350 + 1080/84 = 1430/84 - 1430/84 simplified gives 715/42
- So, 50/12 + 90/7 = 715/42
In mixed form: 171/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/24+90/7 50/12+90/14 50/36+90/7 50/12+90/21 50/60+90/7 50/12+90/35 50/84+90/7 50/12+90/49