Which is a correct first step in solving the inequality –4(2x – 1) > 5 – 3x?distribute –4 to get –8x 4 > 5 – 3x.distribute –4 to get –8x – 1 > 5 – 3x.subtract 2x from both sides of the inequality.add 1 to both sides of the inequality.

Respuesta :

Answer:

Option A is correct.

The first step in solving the inequality is:

to distribute -4 to get  [tex]-8x + 4> 5-3x[/tex]

Step-by-step explanation:

The distributive property says that:

[tex]a\cdot(b+c) =a\cdot b + a\cdot c[/tex]

Given the inequality:

[tex]-4(2x-1)> 5-3x[/tex]

Apply the distributive property we have;

[tex]-4 \cdot (2x) -4\cdot (-1)> 5-3x[/tex]

Simplify:

[tex]-8x + 4> 5-3x[/tex]

Therefore, the first step in solving the inequality is:

to distribute -4 to get  [tex]-8x + 4> 5-3x[/tex]

Distribute –4 to get –8x + 4 > 5 – 3x.

Further explanation

The inequality –4(2x – 1) > 5 – 3x.

We will solve the problem of inequality of one variable. Here are the steps:

Step-1: Distribute –4 to get –8x + 4 > 5 – 3x.

–4(2x – 1) > 5 – 3x

-4(2x) + (-4)(-1) > 5 – 3x

-8x + 4 > 5 – 3x

Therefore, a correct first step in solving the inequality: Distribute –4 to get –8x + 4 > 5 – 3x.

Step-2: Subtract 4 from both sides of the inequality

-8x + 4 - 4 > 5 - 4 – 3x

-8x > 1 – 3x

Step-3: Add 3x from both sides of the inequality

-8x + 3x > 1 – 3x + 3x

-5x > 1

Step-4: Divide -5 from both sides of the inequality

[tex]\boxed{ \ \frac{-5x}{-5} > \frac{1}{-5} \ }[/tex]

Thus, the solution is  [tex]\boxed{\boxed{ \ x < -\frac{1}{5} \ }}[/tex]

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Notes:

  • The Distributive Property:  [tex]\boxed{ \ A(B + C) = A \cdot B + A \cdot C \ }[/tex] or [tex]\boxed{ \ A(B - C) = A \cdot B - A \cdot C \ }[/tex]
  • If inequality is multiplied or divided by a negative number, then the sign of the inequality changes.

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Keywords: a correct first step, in solving the inequality, one variable, distribute, add, subtract, divide, multiply, sign, minus, negative, solution, distributive property

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