Add 30/72 and 24/42
30/72 + 24/42 is 83/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
30/72 = 30 × 7/72 × 7 = 210/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
24/42 = 24 × 12/42 × 12 = 288/504 - Add the two like fractions:
210/504 + 288/504 = 210 + 288/504 = 498/504 - 498/504 simplified gives 83/84
- So, 30/72 + 24/42 = 83/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+24/42 30/72+48/42 30/72+24/84 90/72+24/42 30/72+72/42