Add 21/18 and 16/45
1st number: 1 3/18, 2nd number: 16/45
21/18 + 16/45 is 137/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
16/45 = 16 × 2/45 × 2 = 32/90 - Add the two like fractions:
105/90 + 32/90 = 105 + 32/90 = 137/90 - So, 21/18 + 16/45 = 137/90
In mixed form: 147/90
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