Add 45/7 and 20/72
1st number: 6 3/7, 2nd number: 20/72
45/7 + 20/72 is 845/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
45/7 = 45 × 72/7 × 72 = 3240/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Add the two like fractions:
3240/504 + 140/504 = 3240 + 140/504 = 3380/504 - 3380/504 simplified gives 845/126
- So, 45/7 + 20/72 = 845/126
In mixed form: 689/126
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