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Digital SAT Math Test 3 Question 4

Which expression is equivalent to $13w-(8w-4w)$?
Answer:
B

Explanation

The correct answer is Choice B.

Simplify the given expression.

Choices A and D are incorrect and may result from a sign error when expanding the parentheses.

Choice C is incorrect and may result from algebraic mistakes.

✨ Expert's Tip ✨

Use the PEMDAS rule to simplify expressions. PEMDAS is an acronym for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. These operations must be carried out with decreasing priority i.e., parentheses before exponents followed by multiplication etc.

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