Respuesta :

Space

Answer:

1

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

a - b + c

a = 4

b = 2

c = -1

Step 2: Solve

  1. Substitute:                         4 - 2 - 1
  2. Subtract:                            2 - 1
  3. Subtract:                            1
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