Add 90/7 and 54/10
1st number: 12 6/7, 2nd number: 5 4/10
90/7 + 54/10 is 639/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
90/7 = 90 × 10/7 × 10 = 900/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
54/10 = 54 × 7/10 × 7 = 378/70 - Add the two like fractions:
900/70 + 378/70 = 900 + 378/70 = 1278/70 - 1278/70 simplified gives 639/35
- So, 90/7 + 54/10 = 639/35
In mixed form: 189/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14+54/10 90/7+54/20 90/21+54/10 90/7+54/30 90/35+54/10 90/7+54/50 90/49+54/10 90/7+54/70