Add 28/72 and 21/36
28/72 + 21/36 is 35/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
28/72 = 28 × 1/72 × 1 = 28/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
21/36 = 21 × 2/36 × 2 = 42/72 - Add the two like fractions:
28/72 + 42/72 = 28 + 42/72 = 70/72 - 70/72 simplified gives 35/36
- So, 28/72 + 21/36 = 35/36
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