Use the Associative Property to determine which expressions are equivalent.

-3 times (4x times -2) times -6y = (-3 times 4x) times -2 - 6y

-3 times (4x times -2) times -6y = (-3 times 4x) (-2 times 6y)

-3 times (4x times -2) times -6y = -7xy

-3 times (4x times -2) times -6y = 18 - 8x

1 answer

To determine which expressions are equivalent using the Associative Property, we first need to simplify the left side of the first expression, \(-3 \times (4x \times -2) \times -6y\).

  1. Simplify the left side: \[ -3 \times (4x \times -2) \times -6y \] Start with \(4x \times -2\): \[ 4x \times -2 = -8x \] Now substitute that back into the expression: \[ -3 \times (-8x) \times -6y \] Next, simplify \(-3 \times -8x\): \[ -3 \times -8x = 24x \] Now, multiply by \(-6y\): \[ 24x \times -6y = -144xy \]

So, the left side simplifies to \(-144xy\).

Now let's analyze the right side of each expression to see if any of them simplify to \(-144xy\).

Expressions to Evaluate:

  1. First Expression: \[ (-3 \times 4x) \times -2 - 6y \] This can be interpreted as: \[ (-12x) \times -2 - 6y = 24x - 6y \] This does not equal \(-144xy\).

  2. Second Expression: \[ (-3 \times 4x) \times (-2 \times 6y) \] First calculate \( -2 \times 6y = -12y\): \[ (-12x) \times -12y = 144xy \] This does not equal \(-144xy\).

  3. Third Expression: \[ -7xy \] This clearly does not equal \(-144xy\).

  4. Fourth Expression: \[ 18 - 8x \] This does not equal \(-144xy\).

Summary of Evaluation:

None of the given expressions simplify to \(-144xy\).

Thus, none of the expressions are equivalent to the left side.