8.

Solve the inequality.

–2/3x – 10 < 1/3

1 answer

To solve the inequality \(-\frac{2}{3}x - 10 < \frac{1}{3}\), follow these steps:

  1. Isolate the term with \(x\): First, add \(10\) to both sides of the inequality:

    \[ -\frac{2}{3}x < \frac{1}{3} + 10 \]

    Convert \(10\) to a fraction with a common denominator of \(3\):

    \[ 10 = \frac{30}{3} \]

    So, we have:

    \[ -\frac{2}{3}x < \frac{1}{3} + \frac{30}{3} = \frac{31}{3} \]

  2. Eliminate the coefficient of \(x\): Now, divide both sides by \(-\frac{2}{3}\). Remember that dividing by a negative number reverses the inequality:

    \[ x > \frac{31}{3} \div -\frac{2}{3} \]

    Dividing fractions can be done by multiplying by the reciprocal:

    \[ \frac{31}{3} \div -\frac{2}{3} = \frac{31}{3} \times -\frac{3}{2} = -\frac{31}{2} \]

  3. Conclusion: Therefore, the solution to the inequality is:

    \[ x > -\frac{31}{2} \]

In interval notation, the solution is:

\[ \left(-\frac{31}{2}, \infty\right) \]