Add 20/72 and 9/7
1st number: 20/72, 2nd number: 1 2/7
20/72 + 9/7 is 197/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
9/7 = 9 × 72/7 × 72 = 648/504 - Add the two like fractions:
140/504 + 648/504 = 140 + 648/504 = 788/504 - 788/504 simplified gives 197/126
- So, 20/72 + 9/7 = 197/126
In mixed form: 171/126
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