Add 15/50 and 8/21
15/50 + 8/21 is 143/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
15/50 = 15 × 21/50 × 21 = 315/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
8/21 = 8 × 50/21 × 50 = 400/1050 - Add the two like fractions:
315/1050 + 400/1050 = 315 + 400/1050 = 715/1050 - 715/1050 simplified gives 143/210
- So, 15/50 + 8/21 = 143/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/50+8/21 15/50+16/21 15/50+8/42 45/50+8/21 15/50+24/21 15/50+8/63 75/50+8/21 15/50+40/21 15/50+56/21