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xenn [34]
3 years ago
13

Solve for x (geometry)

Mathematics
1 answer:
Lynna [10]3 years ago
7 0

Answer:

x = -6°

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets

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

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

<u>Geometry</u>

  • All angles in a triangle add up to 180°

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify and set up</em>

x + 81 + 65° + 40° = 180°

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Addition] Combine like terms:                                                                        x + 186° = 180°
  2. [Subtraction Property of Equality] Subtract 186° on both sides:                   x = -6°
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