Math  /  Algebra

Question10. Which of the following expressions is equivalent to 3.5(4x16)+(2x)3.5(4x - 16) + (-2x)? A 14x5614x - 56 B 12x1612x - 16 C 14x1614x - 16 D 12x5612x - 56

Studdy Solution

STEP 1

What is this asking? We need to simplify the expression 3.5(4x16)+(2x)3.5(4x - 16) + (-2x) and find the matching option. Watch out! Don't forget to distribute correctly and combine like terms carefully!

STEP 2

1. Distribute and Simplify
2. Combine Like Terms

STEP 3

Alright, let's **distribute** that 3.53.5 to both terms inside the parentheses (4x16)(4x - 16).
Remember, distributing means multiplying each term inside the parentheses by the number outside.
So, we have 3.54x3.5 \cdot 4x and 3.5(16)3.5 \cdot (-16).

STEP 4

3.54x=14x3.5 \cdot 4x = 14x.
See? Not so bad!

STEP 5

3.5(16)=563.5 \cdot (-16) = -56.
Don't drop that minus sign!

STEP 6

So, after distributing, our expression becomes 14x56+(2x)14x - 56 + (-2x).
Looking good so far!

STEP 7

Remember, **like terms** are terms that have the same variable raised to the same power.
In our expression, 14x14x and 2x-2x are like terms.

STEP 8

Let's combine those xx terms: 14x+(2x)=12x14x + (-2x) = 12x.
We're almost there!

STEP 9

Now, our expression is 12x5612x - 56.
Much simpler, right?

STEP 10

Our simplified expression is 12x5612x - 56, which matches option **D**.
We did it!

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