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Which is a correct first step in solving the inequality [tex]-4(2x - 1) \ \textgreater \ 5 - 3x[/tex]?

A. Distribute -4 to get [tex]-8x + 4 \ \textgreater \ 5 - 3x[/tex].
B. Distribute -4 to get [tex]-8x - 1 \ \textgreater \ 5 - 3x[/tex].
C. Subtract [tex]2x[/tex] from both sides of the inequality.
D. Add 1 to both sides of the inequality.


Sagot :

To solve the inequality [tex]\(-4(2x-1) > 5 - 3x\)[/tex], follow these steps:

1. Distribute [tex]\(-4\)[/tex] across the terms inside the parentheses on the left side of the inequality.

This step involves multiplying [tex]\(-4\)[/tex] by each term inside the parentheses:
[tex]\[ -4(2x - 1) = -4 \cdot 2x + (-4) \cdot (-1) \][/tex]

2. Performing the multiplications leads to:
[tex]\[ -4 \cdot 2x = -8x \quad \text{and} \quad -4 \cdot -1 = 4 \][/tex]

3. Therefore, the inequality after distribution looks like this:
[tex]\[ -8x + 4 > 5 - 3x \][/tex]

Hence, the correct first step in solving the inequality [tex]\(-4(2x-1) > 5 - 3x\)[/tex] is to:

Distribute [tex]\(-4\)[/tex] to get [tex]\(-8x + 4 > 5 - 3x\)[/tex].