Add 6/54 and 40/42
6/54 + 40/42 is 67/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
6/54 = 6 × 7/54 × 7 = 42/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
40/42 = 40 × 9/42 × 9 = 360/378 - Add the two like fractions:
42/378 + 360/378 = 42 + 360/378 = 402/378 - 402/378 simplified gives 67/63
- So, 6/54 + 40/42 = 67/63
In mixed form: 14/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/54+40/42 6/54+80/42 6/54+40/84 18/54+40/42 30/54+40/42 42/54+40/42