Add 15/4 and 20/72, Solve 3 3/4 + 20/72 as a fraction

Add 15/4 and 20/72

1^st number: 3 3/4, 2^nd number: 20/72

15/4 + 20/72 is 145/36.

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,
15/4 = 15 × 18/4 × 18 = 270/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72
Add the two like fractions:
270/72 + 20/72 = 270 + 20/72 = 290/72
290/72 simplified gives 145/36
So, 15/4 + 20/72 = 145/36
In mixed form: 41/36

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