Add 84/70 and 3/40
1st number: 1 14/70, 2nd number: 3/40
84/70 + 3/40 is 51/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
84/70 = 84 × 4/70 × 4 = 336/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Add the two like fractions:
336/280 + 21/280 = 336 + 21/280 = 357/280 - 357/280 simplified gives 51/40
- So, 84/70 + 3/40 = 51/40
In mixed form: 111/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+6/40 84/70+3/80 84/70+9/40 84/70+15/40 84/70+21/40