Add 54/63 and 18/30
54/63 + 18/30 is 51/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
54/63 = 54 × 10/63 × 10 = 540/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
18/30 = 18 × 21/30 × 21 = 378/630 - Add the two like fractions:
540/630 + 378/630 = 540 + 378/630 = 918/630 - 918/630 simplified gives 51/35
- So, 54/63 + 18/30 = 51/35
In mixed form: 116/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/63+36/30 54/63+18/60 54/63+54/30 54/63+18/90 54/63+90/30