Add 90/30 and 54/8
1st number: 3 0/30, 2nd number: 6 6/8
90/30 + 54/8 is 39/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
90/30 = 90 × 4/30 × 4 = 360/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
54/8 = 54 × 15/8 × 15 = 810/120 - Add the two like fractions:
360/120 + 810/120 = 360 + 810/120 = 1170/120 - 1170/120 simplified gives 39/4
- So, 90/30 + 54/8 = 39/4
In mixed form: 93/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+54/8 90/30+54/16 90/30+54/24 90/30+54/40 90/30+54/56