What is a solution set of 2x-3=5 and 5x+3 > -12?

1 answer

To find the solution set of the equations \(2x - 3 = 5\) and the inequality \(5x + 3 > -12\), we will solve each one separately and then find the intersection of their solutions.

  1. Solve the equation \(2x - 3 = 5\):

    \[ 2x - 3 = 5 \] Add 3 to both sides: \[ 2x = 5 + 3 \] \[ 2x = 8 \] Divide by 2: \[ x = 4 \]

  2. Solve the inequality \(5x + 3 > -12\):

    \[ 5x + 3 > -12 \] Subtract 3 from both sides: \[ 5x > -12 - 3 \] \[ 5x > -15 \] Divide by 5 (and since 5 is a positive number, the inequality remains the same): \[ x > -3 \]

  3. Combine the solutions:

    The solution to the equation \(2x - 3 = 5\) gives us \(x = 4\). The solution to the inequality \(5x + 3 > -12\) gives us \(x > -3\).

Since \(x = 4\) satisfies \(x > -3\), the combined solution set is simply \(x = 4\).

Final Answer: The solution set is \({4}\).