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3 years ago

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

Mathematics

2 answers:

lisabon 2012 [21]3 years ago

8 0

Answer:

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 :)

hram777 [196]3 years ago

6 0

Answer:

x = 4

Step-by-step explanation:

Step 1: Write equation

-3x + 20 = 8

Step 2: Solve for x

Subtract 20 on both sides: -3x = -12
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

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