Respuesta :

Space

Answer:

(8, 2)

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

  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

x = 4y

3x - 2y = 20

Step 2: Solve for y

Substitution

  1. Substitute in x:                              3(4y) - 2y = 20
  2. Multiply:                                         12y - 2y = 20
  3. Combine like terms:                      10y = 20
  4. Divide 10 on both sides:               y = 2

Step 3: Solve for x

  1. Define equation:                    x = 4y
  2. Substitute in y:                       x = 4(2)
  3. Multiply:                                  x = 8

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