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23 November, 01:55

What is the solution to this equation?

5 х+9 - 3 х = 18 + 15

А. x = 8

B. х = 3

с. х = 12

D. x = 21

+3
Answers (2)
  1. 23 November, 02:10
    0
    C. x = 12

    Step-by-step explanation:

    5 (12) + 9 = 69 - 3 (12) = 33

    18 + 15 = 33
  2. 23 November, 03:26
    0
    Answer: x = 12

    Step-by-step explanation:

    The given equation is expressed as

    5 х+9 - 3 х = 18 + 15

    5x - 3x + 9 = 33

    2x + 9 = 33

    The first step is to make the terms each term containing x to be on the left hand side of the equation and the constants to be on the right hand side of the equation. Therefore, we would subtract 9 from the left hand side and the right hand side of the equation.

    It becomes

    2x + 9 - 9 = 33 - 9

    2x = 24

    Dividing the left hand side and the right hand side of the equation by 2, it becomes

    2x/2 = 24/2

    x = 12
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