Add 30/2 and 21/42
1st number: 15 0/2, 2nd number: 21/42
30/2 + 21/42 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
30/2 = 30 × 21/2 × 21 = 630/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Add the two like fractions:
630/42 + 21/42 = 630 + 21/42 = 651/42 - 651/42 simplified gives 31/2
- So, 30/2 + 21/42 = 31/2
In mixed form: 151/2
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