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final solution to the system of equations given below
x=-4
5x+4y=-10​

Sagot :

Space

Answer:

(-4, 5/2)

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
  • Subtraction Property of Equality

Algebra I

  • Coordinates (x, y)
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

x = -4

5x + 4y = -10

Step 2: Solve for y

Substitution

  1. Substitute in x:                                                                                                5(-4) + 4y = -10
  2. Multiply:                                                                                                           -20 + 4y = -10
  3. [Addition Property of Equality] Add 20 on both sides:                               4y = 10
  4. [Division Property of Equality] Divide 4 on both sides:                                 y = 10/4
  5. Simplify:                                                                                                             y = 5/2
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