Add 20/36 and 45/72
20/36 + 45/72 is 85/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
20/36 = 20 × 2/36 × 2 = 40/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
45/72 = 45 × 1/72 × 1 = 45/72 - Add the two like fractions:
40/72 + 45/72 = 40 + 45/72 = 85/72 - So, 20/36 + 45/72 = 85/72
In mixed form: 113/72
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