Add 40/14 and 70/40
1st number: 2 12/14, 2nd number: 1 30/40
40/14 + 70/40 is 129/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
40/14 = 40 × 20/14 × 20 = 800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
70/40 = 70 × 7/40 × 7 = 490/280 - Add the two like fractions:
800/280 + 490/280 = 800 + 490/280 = 1290/280 - 1290/280 simplified gives 129/28
- So, 40/14 + 70/40 = 129/28
In mixed form: 417/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14+70/40 40/28+70/40 40/14+70/80 40/42+70/40 40/70+70/40 40/98+70/40