Question

Solve 8a – 15 – 6a + 3a = 85

Answer 1

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