Respuesta :

Space

Answer:

a = 20

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

Step-by-step explanation:

Step 1: Define

8a - 15 - 6a + 3a = 85

Step 2: Solve for a

  1. Combine like terms:                    5a - 15 = 85
  2. Isolate a term:                              5a = 100
  3. Isolate a:                                       a = 20

Otras preguntas