3(-2 - n) = -9 -4n answer

n = -3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

3(-2 - n) = -9 - 4n

Step 2: Solve for n

Distribute 3:                    -6 - 3n = -9 - 4nAdd 4n to both sides:     -6 + n = -9Add 6 to both sides:       n = -3

Step 3: Check

Plug in n to verify it's a solution.

Substitute:                    3(-2 - -3) = -9 - 4(-3)Simplify:                        3(-2 + 3) = -9 - 4(-3)Add:                              3(1) = -9 - 4(-3)Multiply:                        3 = -9 + 12Add:                              3 = 3