Calculate 2/5 + 1/8.
Answer and explanation
Correct answer: B. 21/40
- Step 1: Use a common denominator of 40. Step 2. The sum is 21/40. Answer: 21/40. Why not the others: 3/13: numerators and denominators were added separately. 1/20: the fractions were multiplied. 11/40: the fractions were subtracted.
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