Add 84/70 and 1/42
1st number: 1 14/70, 2nd number: 1/42
84/70 + 1/42 is 257/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
84/70 = 84 × 3/70 × 3 = 252/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
1/42 = 1 × 5/42 × 5 = 5/210 - Add the two like fractions:
252/210 + 5/210 = 252 + 5/210 = 257/210 - So, 84/70 + 1/42 = 257/210
In mixed form: 147/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+2/42 84/70+1/84 84/70+3/42 84/70+5/42 84/70+7/42