Question

Rearrange w=3(2a+b)-4 to make a the subject

Answer 1

a = (w - 3b + 4)/6

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
• Subtract Property of Equality

Explanation:

Step 1: Define

w = 3(2a + b) - 4

Step 2: Solve for a

1. Add 4 to both sides: w + 4 = 3(2a + b)
2. Divide 3 on both sides: (w + 4)/3 = 2a + b
3. Subtract b on both sides: (w + 4)/3 - b = 2a
4. Divide 2 on both sides: (w - 3b + 4)/6 = a
5. Rewrite: a = (w - 3b + 4)/6