Add 15/42 and 21/5
1st number: 15/42, 2nd number: 4 1/5
15/42 + 21/5 is 319/70.
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,
15/42 = 15 × 5/42 × 5 = 75/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
21/5 = 21 × 42/5 × 42 = 882/210 - Add the two like fractions:
75/210 + 882/210 = 75 + 882/210 = 957/210 - 957/210 simplified gives 319/70
- So, 15/42 + 21/5 = 319/70
In mixed form: 439/70
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