Add 42/8 and 21/4
1st number: 5 2/8, 2nd number: 5 1/4
42/8 + 21/4 is 21/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 4 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 8 × 1 = 8,
42/8 = 42 × 1/8 × 1 = 42/8 - Likewise, for the 2nd fraction, since 4 × 2 = 8,
21/4 = 21 × 2/4 × 2 = 42/8 - Add the two like fractions:
42/8 + 42/8 = 42 + 42/8 = 84/8 - 84/8 simplified gives 21/2
- So, 42/8 + 21/4 = 21/2
In mixed form: 101/2
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