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20 votes
Evaluate 36 / x + 9 when x equals 3

2 Answers

12 votes
36/x+9 = 3

Multiply all terms by x and cancel:

36+9x=3x

9x+36=3x
(Simplify both sides of the equation)

9x+36−3x = 3x−3x

(Subtract 3x from both sides)

6x+36 = 0
6x+36−36 = 0−36

(Subtract 36 from both sides)

6x = −36

6x/6 = −36/6

(Divide both sides by 6)

x = −6

Check answers. (Plug them in to make sure they work.)

x = −6


(Works in original equation)

Answer: x = −6
User Charlax
by
4.3k points
7 votes

Answer:

  • 3.

Explanation:

Given equation:

  • 36 ÷ x + 9

Given variables:

  • x = 3.

Solve:

  • 36 ÷ x + 9
  • = 36 ÷ 3 + 9
  • = 36 ÷ 12
  • = 3.
User BossWalrus
by
4.5k points