Respuesta :

Space

Answer:

(6, 4)

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

2x - 10y = -28

-10x + 10y = -20

Step 2: Solve for x

Elimination

  1. Combine equations:                    -8x = -48
  2. Divide -8 on both sides:              x = 6

Step 3: Solve for y

  1. Define equation:                    2x - 10y = -28
  2. Substitute in x:                       2(6) - 10y = -28
  3. Multiply:                                  12 - 10y = -28
  4. Isolate y term:                         -10y = -40
  5. Isolate y:                                 y = 4

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