Add 45/4 and 20/72
1st number: 11 1/4, 2nd number: 20/72
45/4 + 20/72 is 415/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
45/4 = 45 × 18/4 × 18 = 810/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Add the two like fractions:
810/72 + 20/72 = 810 + 20/72 = 830/72 - 830/72 simplified gives 415/36
- So, 45/4 + 20/72 = 415/36
In mixed form: 1119/36
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