Add 45/42 and 12/7
1st number: 1 3/42, 2nd number: 1 5/7
45/42 + 12/7 is 39/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
45/42 = 45 × 1/42 × 1 = 45/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
12/7 = 12 × 6/7 × 6 = 72/42 - Add the two like fractions:
45/42 + 72/42 = 45 + 72/42 = 117/42 - 117/42 simplified gives 39/14
- So, 45/42 + 12/7 = 39/14
In mixed form: 211/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+12/7 45/42+24/7 45/84+12/7 45/42+12/14 45/42+36/7 45/42+12/21 45/42+60/7 45/42+12/35 45/42+84/7 45/42+12/49