Add 21/42 and 75/5
1st number: 21/42, 2nd number: 15 0/5
21/42 + 75/5 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
75/5 = 75 × 42/5 × 42 = 3150/210 - Add the two like fractions:
105/210 + 3150/210 = 105 + 3150/210 = 3255/210 - 3255/210 simplified gives 31/2
- So, 21/42 + 75/5 = 31/2
In mixed form: 151/2
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