Solve the compound inequality.

4 - 2x > 7 and 2 - 3(x + 1) < 5

1 answer

To solve the compound inequality \(4 - 2x > 7\) and \(2 - 3(x + 1) < 5\), we will solve each inequality separately.

First Inequality:

\[ 4 - 2x > 7 \]

Subtract 4 from both sides:

\[ -2x > 7 - 4 \]

This simplifies to:

\[ -2x > 3 \]

Now, divide both sides by -2. Remember to flip the inequality sign when dividing by a negative number:

\[ x < -\frac{3}{2} \]

Second Inequality:

\[ 2 - 3(x + 1) < 5 \]

First, distribute the -3:

\[ 2 - 3x - 3 < 5 \]

Combine like terms:

\[ -3x - 1 < 5 \]

Add 1 to both sides:

\[ -3x < 5 + 1 \]

This simplifies to:

\[ -3x < 6 \]

Now, divide both sides by -3, remembering to flip the inequality sign:

\[ x > -2 \]

Combining Results:

We have the two inequalities:

  1. \(x < -\frac{3}{2}\)
  2. \(x > -2\)

The solution must satisfy both conditions. So we can express the solution in interval notation:

\[ -2 < x < -\frac{3}{2} \]

This is the solution to the compound inequality. In interval notation, it is:

\[ (-2, -\frac{3}{2}) \]