Add 15/30 and 84/42
1st number: 15/30, 2nd number: 2 0/42
15/30 + 84/42 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
84/42 = 84 × 5/42 × 5 = 420/210 - Add the two like fractions:
105/210 + 420/210 = 105 + 420/210 = 525/210 - 525/210 simplified gives 5/2
- So, 15/30 + 84/42 = 5/2
In mixed form: 21/2
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