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Which expression is equivalent to 
-3(1)/(8)-2(1)/(2) ?
Choose 1 answer:
(A) 
3(1)/(8)-2(1)/(2)
(B) 
2(1)/(2)-3(1)/(8)
(c) 
2(1)/(2)-(-3(1)/(8))
(D) 
-3(1)/(8)+(-2(1)/(2))

Which expression is equivalent to 318212 -3 \frac{1}{8}-2 \frac{1}{2} ?\newlineChoose 11 answer:\newline(A) 318212 3 \frac{1}{8}-2 \frac{1}{2} \newline(B) 212318 2 \frac{1}{2}-3 \frac{1}{8} \newline(C) 212(318) 2 \frac{1}{2}-\left(-3 \frac{1}{8}\right) \newline(D) 318+(212) -3 \frac{1}{8}+\left(-2 \frac{1}{2}\right)

Full solution

Q. Which expression is equivalent to 318212 -3 \frac{1}{8}-2 \frac{1}{2} ?\newlineChoose 11 answer:\newline(A) 318212 3 \frac{1}{8}-2 \frac{1}{2} \newline(B) 212318 2 \frac{1}{2}-3 \frac{1}{8} \newline(C) 212(318) 2 \frac{1}{2}-\left(-3 \frac{1}{8}\right) \newline(D) 318+(212) -3 \frac{1}{8}+\left(-2 \frac{1}{2}\right)
  1. Understand the problem: Understand the problem.\newlineWe need to find the expression that is equivalent to the given expression 3(18)2(12)-3\left(\frac{1}{8}\right)-2\left(\frac{1}{2}\right).
  2. Analyze the answer choices: Analyze the answer choices.\newline(A) 3(18)2(12)3\left(\frac{1}{8}\right)-2\left(\frac{1}{2}\right) changes the sign of the first term.\newline(B) 2(12)3(18)2\left(\frac{1}{2}\right)-3\left(\frac{1}{8}\right) changes the order and the signs of the terms.\newline(C) 2(12)(3(18))2\left(\frac{1}{2}\right)-(-3\left(\frac{1}{8}\right)) changes the order of the terms and adds a negative sign in front of the second term.\newline(D) 3(18)+(2(12))-3\left(\frac{1}{8}\right)+(-2\left(\frac{1}{2}\right)) keeps the first term the same and adds a negative sign in front of the second term.
  3. Compare with original expression: Compare the original expression with the answer choices.\newlineThe original expression is 3(18)2(12)-3\left(\frac{1}{8}\right)-2\left(\frac{1}{2}\right). We need to find an equivalent expression, which means the mathematical value should remain unchanged.
  4. Evaluate each answer choice: Evaluate each answer choice.\newline(A) 3(18)2(12)3\left(\frac{1}{8}\right)-2\left(\frac{1}{2}\right) is not equivalent because the sign of the first term is different from the original expression.\newline(B) 2(12)3(18)2\left(\frac{1}{2}\right)-3\left(\frac{1}{8}\right) is not equivalent because the order of the terms is reversed, which changes the subtraction to addition for the first term.\newline(C) 2(12)(3(18))2\left(\frac{1}{2}\right)-(-3\left(\frac{1}{8}\right)) is not equivalent because the order of the terms is reversed, and the negative sign in front of the second term changes the operation from subtraction to addition.\newline(D) 3(18)+(2(12))-3\left(\frac{1}{8}\right)+(-2\left(\frac{1}{2}\right)) is equivalent because it keeps the first term the same and the addition of a negative is the same as subtraction, so the mathematical value is unchanged.
  5. Choose the correct answer: Choose the correct answer.\newlineThe correct answer is (D) 3(18)+(2(12))-3\left(\frac{1}{8}\right)+\left(-2\left(\frac{1}{2}\right)\right) because it is the only choice that maintains the mathematical value of the original expression.

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