Add 21/30 and 42/8
1st number: 21/30, 2nd number: 5 2/8
21/30 + 42/8 is 119/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
42/8 = 42 × 15/8 × 15 = 630/120 - Add the two like fractions:
84/120 + 630/120 = 84 + 630/120 = 714/120 - 714/120 simplified gives 119/20
- So, 21/30 + 42/8 = 119/20
In mixed form: 519/20
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