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Answer:

x = 12

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

  • Equality Properties

Step-by-step explanation:

Step 1: Define

-10(x + 9) + 14x = -42

Step 2: Solve for x

  1. Distribute -10:                              -10x - 90 + 14x = -42
  2. Combine like terms:                   4x - 90 = -42
  3. Add 90 to both sides:                4x = 48
  4. Divide 4 on both sides:              x = 12
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