Add 45/72 and 12/63
45/72 + 12/63 is 137/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
12/63 = 12 × 8/63 × 8 = 96/504 - Add the two like fractions:
315/504 + 96/504 = 315 + 96/504 = 411/504 - 411/504 simplified gives 137/168
- So, 45/72 + 12/63 = 137/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+12/63 45/72+24/63 45/72+36/63 45/72+60/63 45/72+84/63