Add 21/42 and 45/3
1st number: 21/42, 2nd number: 15 0/3
21/42 + 45/3 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
45/3 = 45 × 14/3 × 14 = 630/42 - Add the two like fractions:
21/42 + 630/42 = 21 + 630/42 = 651/42 - 651/42 simplified gives 31/2
- So, 21/42 + 45/3 = 31/2
In mixed form: 151/2
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