Add 7/42 and 14/40
7/42 + 14/40 is 31/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
7/42 = 7 × 20/42 × 20 = 140/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
14/40 = 14 × 21/40 × 21 = 294/840 - Add the two like fractions:
140/840 + 294/840 = 140 + 294/840 = 434/840 - 434/840 simplified gives 31/60
- So, 7/42 + 14/40 = 31/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+14/40 7/42+28/40 7/84+14/40 7/42+14/80 21/42+14/40 7/42+42/40 35/42+14/40 7/42+70/40 49/42+14/40 7/42+98/40