Respuesta :

Space

Answer:

(2, -1)

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

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Algebra I

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

2x + y = 3

-2x + 5y = -9

Step 2: Solve for y

Elimination

  1. Combine equations:                    6y = -6
  2. Divide 6 on both sides:               y = -1

Step 3: Solve for x

  1. Define equation:                    2x + y = 3
  2. Substitute in y:                       2x - 1 = 3
  3. Isolate y term:                        2x = 4
  4. Isolate y:                                 x = 2

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