Question

Solve for x 3x -y =12

Answer 1

Answer:

$\displaystyle x= \frac{y + 12}{3}$

General Formulas and Concepts:

Pre-Algebra

Equality Properties

• Multiplication Property of Equality
• Division Property of Equality
• Addition Property of Equality
• Subtraction Property of Equality

Algebra I

• Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle 3x - y = 12$

Step 2: Solve for x

1. [Addition Property of Equality] Add y on both sides:                                     $\displaystyle 3x = 12 + y$
2. [Division Property of Equality] Divide 3 on both sides:                                  $\displaystyle x = \frac{12 + y}{3}$

Answer 2

Answer:

x =  y + 12 / 3

Step-by-step explanation:

3x - y =12

3x = y + 12

x = y + 12 / 3