Add 42/72 and 25/84
42/72 + 25/84 is 37/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
25/84 = 25 × 6/84 × 6 = 150/504 - Add the two like fractions:
294/504 + 150/504 = 294 + 150/504 = 444/504 - 444/504 simplified gives 37/42
- So, 42/72 + 25/84 = 37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+25/84 42/72+50/84 42/72+75/84