Purchase Solution

Variable substitution

Not what you're looking for?

Ask Custom Question

Find the numerical value of the rational expression when (a) x = 2 and (b) x = -3.
(4x - 2) / 3x

(a) When x = 2, the numerical value is __

(b) When x = -3, the numerical value is ___

Simplify each answer. Type an integer or a fraction. Type N if the value in undefined.

Purchase this Solution

Solution Summary

This provides an example of solving an equation with a given value for the variable.

Purchase this Solution


Free BrainMass Quizzes
Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.