Add 10/40 and 2/42
10/40 + 2/42 is 25/84.
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,
10/40 = 10 × 21/40 × 21 = 210/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
2/42 = 2 × 20/42 × 20 = 40/840 - Add the two like fractions:
210/840 + 40/840 = 210 + 40/840 = 250/840 - 250/840 simplified gives 25/84
- So, 10/40 + 2/42 = 25/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+2/42 10/40+4/42 10/80+2/42 10/40+2/84 30/40+2/42 10/40+6/42 50/40+2/42 10/40+10/42 70/40+2/42 10/40+14/42