Question

Given: -3x+20=8; prove: x=4

Answer 1

Answer:

4

Step-by-step explanation:

Step 1:

- 3x + 20 = 8     Equation

Step 2:

- 3x = 8 - 20    Subtract 20 on both sides

Step 3:

- 3x = - 12   Subtract

Step 4:

x = - 12 ÷ - 3    Divide

Answer:

x = 4

Hope This Helps :)

Answer 2

Answer:

x = 4

Step-by-step explanation:

Step 1: Write equation

-3x + 20 = 8

Step 2: Solve for x

1. Subtract 20 on both sides: -3x = -12
2. Divide both sides by -3: x = 4

Step 3: Check

Plug in x to verify it's a solution.

-3(4) + 20 = 8

-12 + 20 = 8

8 = 8