Add 20/12 and 42/72
1st number: 1 8/12, 2nd number: 42/72
20/12 + 42/72 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
20/12 = 20 × 6/12 × 6 = 120/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
120/72 + 42/72 = 120 + 42/72 = 162/72 - 162/72 simplified gives 9/4
- So, 20/12 + 42/72 = 9/4
In mixed form: 21/4
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