Add 75/42 and 12/45
1st number: 1 33/42, 2nd number: 12/45
75/42 + 12/45 is 431/210.
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,
75/42 = 75 × 15/42 × 15 = 1125/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
12/45 = 12 × 14/45 × 14 = 168/630 - Add the two like fractions:
1125/630 + 168/630 = 1125 + 168/630 = 1293/630 - 1293/630 simplified gives 431/210
- So, 75/42 + 12/45 = 431/210
In mixed form: 211/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42+24/45 75/84+12/45 75/42+12/90 75/42+36/45 75/42+60/45 75/42+84/45