Add 70/42 and 4/84
1st number: 1 28/42, 2nd number: 4/84
70/42 + 4/84 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
70/42 = 70 × 2/42 × 2 = 140/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Add the two like fractions:
140/84 + 4/84 = 140 + 4/84 = 144/84 - 144/84 simplified gives 12/7
- So, 70/42 + 4/84 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+8/84 70/84+4/84 70/42+12/84 70/42+20/84 70/42+28/84