Add 50/80 and 1/21
50/80 + 1/21 is 113/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
50/80 = 50 × 21/80 × 21 = 1050/1680 - Likewise, for the 2nd fraction, since 21 × 80 = 1680,
1/21 = 1 × 80/21 × 80 = 80/1680 - Add the two like fractions:
1050/1680 + 80/1680 = 1050 + 80/1680 = 1130/1680 - 1130/1680 simplified gives 113/168
- So, 50/80 + 1/21 = 113/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/80+2/21 50/80+1/42 50/80+3/21 50/80+1/63 50/80+5/21 50/80+7/21