Add 12/42 and 50/40
1st number: 12/42, 2nd number: 1 10/40
12/42 + 50/40 is 43/28.
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,
12/42 = 12 × 20/42 × 20 = 240/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
50/40 = 50 × 21/40 × 21 = 1050/840 - Add the two like fractions:
240/840 + 1050/840 = 240 + 1050/840 = 1290/840 - 1290/840 simplified gives 43/28
- So, 12/42 + 50/40 = 43/28
In mixed form: 115/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+50/40 12/84+50/40 12/42+50/80 36/42+50/40 60/42+50/40 84/42+50/40