Respuesta :

Space

Answer:

m = -3, n = 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

Algebra I

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

3m - n = -10

2m + n = -5

Step 2: Solve for m

Elimination

  1. Combine equations:                    5m = -15
  2. Divide 5 on both sides:               m = -3

Step 3: Solve for n

  1. Define equation:                    3m - n = -10
  2. Substitute in m:                      3(-3) - n = -10
  3. Multiply:                                  -9 - n = -10
  4. Add 9 to both sides:              -n = -1
  5. Divide -1 on both sides:         n = 1

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