Add 54/14 and 90/20
1st number: 3 12/14, 2nd number: 4 10/20
54/14 + 90/20 is 117/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
54/14 = 54 × 10/14 × 10 = 540/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
90/20 = 90 × 7/20 × 7 = 630/140 - Add the two like fractions:
540/140 + 630/140 = 540 + 630/140 = 1170/140 - 1170/140 simplified gives 117/14
- So, 54/14 + 90/20 = 117/14
In mixed form: 85/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/28+90/20 54/14+90/40 54/42+90/20 54/14+90/60 54/70+90/20 54/98+90/20