Add 25/12 and 70/42
1st number: 2 1/12, 2nd number: 1 28/42
25/12 + 70/42 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
25/12 = 25 × 7/12 × 7 = 175/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
70/42 = 70 × 2/42 × 2 = 140/84 - Add the two like fractions:
175/84 + 140/84 = 175 + 140/84 = 315/84 - 315/84 simplified gives 15/4
- So, 25/12 + 70/42 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/12+70/42 25/24+70/42 25/12+70/84 75/12+70/42 25/36+70/42 25/60+70/42 25/84+70/42