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20 June, 00:39

What is the value of a?

a - 2 = 3/3+6a

+4
Answers (2)
  1. 20 June, 00:42
    0
    Here-

    Let's solve your equation step-by-step.

    Step 1: Simplify both sides of the equation. a-2 = 3/3 + 6a

    Simplify:a + - 2 = 1 + 6a

    a - 2 = 6a + 1

    Step 2:

    Subtract 6a from both sides.

    a-2 - 6a = 6a + 1 - 6 a

    -5a-2=1

    Step 3: Add 2 to both sides.

    -5a-2 + 2 = 1 + 2

    -5a = 3

    Step 4: Divide both sides by - 5.-5a / - 5 = 3/-5

    Final Result:

    a = - 3/5
  2. 20 June, 01:08
    0
    Simple way, remember this quadratic formula: x = (-b+-√b²-4ac) / 2a

    a - 2 = 3/3+6a

    (a-2) (3+6a) = 3

    3a + 6a² - 6 - 12a = 3

    6a² - 9a - 6 - 3 = 0

    6a² - 9a - 9 = 0

    a=6 b=9 c=9

    Note that a² is a. a is b. 9 is c. That is the quadratic formula.

    We will use the quadratic formula here:

    x = (-b+-√b²-4ac) / 2a

    Note that you have to use + / - separately to get the correct answer.

    x = (-9+√9²-4 (6) (-9) / 2 (6) = 0.68

    x = (-9-√3²-4 (6) (-9)) / 2 (6) = - 2.18

    So the value of a is either 0.68 or - 2.18.
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