Add 21/2 and 90/72
1st number: 10 1/2, 2nd number: 1 18/72
21/2 + 90/72 is 47/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 2 × 36 = 72,
21/2 = 21 × 36/2 × 36 = 756/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Add the two like fractions:
756/72 + 90/72 = 756 + 90/72 = 846/72 - 846/72 simplified gives 47/4
- So, 21/2 + 90/72 = 47/4
In mixed form: 113/4
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