Add 21/25 and 8/30
21/25 + 8/30 is 83/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 25 × 6 = 150,
21/25 = 21 × 6/25 × 6 = 126/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
8/30 = 8 × 5/30 × 5 = 40/150 - Add the two like fractions:
126/150 + 40/150 = 126 + 40/150 = 166/150 - 166/150 simplified gives 83/75
- So, 21/25 + 8/30 = 83/75
In mixed form: 18/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+8/30 21/25+16/30 21/50+8/30 21/25+8/60 63/25+8/30 21/25+24/30 21/75+8/30 21/25+8/90 21/25+40/30 21/25+56/30