Add 50/54 and 40/42
50/54 + 40/42 is 355/189.
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,
50/54 = 50 × 7/54 × 7 = 350/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
40/42 = 40 × 9/42 × 9 = 360/378 - Add the two like fractions:
350/378 + 360/378 = 350 + 360/378 = 710/378 - 710/378 simplified gives 355/189
- So, 50/54 + 40/42 = 355/189
In mixed form: 1166/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/54+80/42 50/54+40/84