Add 4/42 and 50/80
4/42 + 50/80 is 121/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
4/42 = 4 × 40/42 × 40 = 160/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
50/80 = 50 × 21/80 × 21 = 1050/1680 - Add the two like fractions:
160/1680 + 1050/1680 = 160 + 1050/1680 = 1210/1680 - 1210/1680 simplified gives 121/168
- So, 4/42 + 50/80 = 121/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+50/80 4/84+50/80 12/42+50/80 20/42+50/80 28/42+50/80