How do you solve the equation abs(3(x-2))=10?

1 Answer
Nov 29, 2017

See a solution process below:

Explanation:

The absolute value function takes any term and transforms it to its non-negative form. Therefore, we must solve the term within the absolute value function for both its negative and positive equivalent.

Solution 1:

color(red)(3)(x - 2) = -10

(color(red)(3) xx x) - (color(red)(3) xx 2) = -10

3x - 6 = -10

3x - 6 + color(red)(6) = -10 + color(red)(6)

3x - 0 = -4

3x = -4

(3x)/color(red)(3) = -4/color(red)(3)

(color(red)(cancel(color(black)(3)))x)/cancel(color(red)(3)) = -4/3

x = -4/3

Solution 1:

color(red)(3)(x - 2) = 10

(color(red)(3) xx x) - (color(red)(3) xx 2) = 10

3x - 6 = 10

3x - 6 + color(red)(6) = 10 + color(red)(6)

3x - 0 = 16

3x = 16

(3x)/color(red)(3) = 16/color(red)(3)

(color(red)(cancel(color(black)(3)))x)/cancel(color(red)(3)) = 16/3

x = 16/3

The Solution Is: x = {-4/3, 16/3}