# Variable substitution

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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.

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## SOLUTION This solution is **FREE** courtesy of BrainMass!

(4x - 2) / 3x

When x = 2, the numerical value is (4*2 - 2) / (3*2) = 6/6 = 1

When x = 3, the numerical value is (4*3 - 2) / (3*3) = 10/9

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