Add 70/40 and 14/42
1st number: 1 30/40, 2nd number: 14/42
70/40 + 14/42 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
14/42 = 14 × 20/42 × 20 = 280/840 - Add the two like fractions:
1470/840 + 280/840 = 1470 + 280/840 = 1750/840 - 1750/840 simplified gives 25/12
- So, 70/40 + 14/42 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+28/42 70/80+14/42 70/40+14/84 70/40+70/42 70/40+98/42