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Home > MC2 > Chapter 9 > Lesson 9.1.2 > Problem 9-20

9-20.
  1. Simplify and solve each equation below for x. Show your work and check your answer. Homework Help ✎

    1. 24 = 3x + 3

    2. 2(x – 6) = x – 14

    3. 3(2x – 3) = 4x – 5

Begin isolating x by subtracting 3 from both sides.

−3 + 24 = 3x + 3 − 3
21 = 3x

Divide both sides by 3.

x = 7

Follow the methods presented in (a) and (b).

Begin by distributing.

2(x) − 2(6) = x − 14
2x − 12 = x − 14

Add 12 to both sides.

2x = x − 2

Subtract x from each side.

x = −2

Follow the methods presented in (a) and (b).