Add 18/54 and 25/7
1st number: 18/54, 2nd number: 3 4/7
18/54 + 25/7 is 82/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
25/7 = 25 × 54/7 × 54 = 1350/378 - Add the two like fractions:
126/378 + 1350/378 = 126 + 1350/378 = 1476/378 - 1476/378 simplified gives 82/21
- So, 18/54 + 25/7 = 82/21
In mixed form: 319/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54+25/7 18/54+50/7 18/54+25/14 18/54+75/7 18/54+25/21 90/54+25/7 18/54+25/35 18/54+25/49