Question

I need to solve for x

Answer 1

mAB = 7

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

• Terms/Coefficients/Degrees

Explanation:

Step 1: Define

Set up equation.

mAB + mBC = mAC

x + 4 + 4 = 3x + 2

Step 2: Solve for x

1. Combine like terms: x + 8 = 3x + 2
2. Isolate x terms: 8 = 2x + 2
3. Isolate x term: 6 = 2x
4. Isolate x: 3 = x
5. Rewrite: x = 3

Step 3: Find AB

1. Define: mAB = x + 4
2. Substitute in x: mAB = 3 + 4
3. Add: mAB = 7