Add 45/30 and 54/90
1st number: 1 15/30, 2nd number: 54/90
45/30 + 54/90 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
45/30 = 45 × 3/30 × 3 = 135/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
54/90 = 54 × 1/90 × 1 = 54/90 - Add the two like fractions:
135/90 + 54/90 = 135 + 54/90 = 189/90 - 189/90 simplified gives 21/10
- So, 45/30 + 54/90 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+54/90 45/60+54/90 45/90+54/90