A. x = -40
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Left to Right
Equality Properties
Step-by-step explanation:
Step 1: Define
-3.5(x + 12) = -2x + 18
Step 2: Solve for x
Distribute -3.5: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -3.5x - 42 = -2x + 18Add 3.5x on both sides: Â Â Â Â Â Â Â -42 = 1.5x + 18Subtract 18 on both sides: Â Â Â Â Â -60 = 1.5xDivide 1.5 on both sides: Â Â Â Â Â Â Â -40 = xRewrite: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â x = -40