Add 54/42 and 45/75
1st number: 1 12/42, 2nd number: 45/75
54/42 + 45/75 is 66/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
54/42 = 54 × 25/42 × 25 = 1350/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
45/75 = 45 × 14/75 × 14 = 630/1050 - Add the two like fractions:
1350/1050 + 630/1050 = 1350 + 630/1050 = 1980/1050 - 1980/1050 simplified gives 66/35
- So, 54/42 + 45/75 = 66/35
In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+90/75 54/84+45/75