Add 54/42 and 5/45
1st number: 1 12/42, 2nd number: 5/45
54/42 + 5/45 is 88/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
54/42 = 54 × 15/42 × 15 = 810/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
5/45 = 5 × 14/45 × 14 = 70/630 - Add the two like fractions:
810/630 + 70/630 = 810 + 70/630 = 880/630 - 880/630 simplified gives 88/63
- So, 54/42 + 5/45 = 88/63
In mixed form: 125/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+10/45 54/84+5/45 54/42+5/90 54/42+15/45 54/42+25/45 54/42+35/45