Respuesta :

Answer:

x=26.4

Step-by-step explanation:

5x+12=144

    -12   -12

5x=132

/5    /5

x=26.4

Space

Answer:

x = 132/5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Algebra I

Terms/Coefficients

Equality Properties

  1. Multiplication Property of Equality
  2. Division Property of Equality
  3. Addition Property of Equality
  4. Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify.

5x + 12 = 144

Step 2: Solve for x

  1. [Subtraction Property of Equality] Subtract 12 on both sides:                       5x = 132
  2. [Division Property of Equality] Divide 5 on both sides:                                 x = 132/5

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