Add 21/72 and 90/16
1st number: 21/72, 2nd number: 5 10/16
21/72 + 90/16 is 71/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
21/72 = 21 × 2/72 × 2 = 42/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
90/16 = 90 × 9/16 × 9 = 810/144 - Add the two like fractions:
42/144 + 810/144 = 42 + 810/144 = 852/144 - 852/144 simplified gives 71/12
- So, 21/72 + 90/16 = 71/12
In mixed form: 511/12
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