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myrzilka [38]
3 years ago
13

Find the value of x when 6 - 4x = 7x-9x - 6 The value of x is​

Mathematics
1 answer:
Vesna [10]3 years ago
3 0

Answer:

x = 6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define Equation</u>

6 - 4x = 7x - 9x - 6

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Combine like terms:                    6 - 4x = -2x - 6
  2. Add 4x on both sides:                 6 = 2x - 6
  3. Add 6 on both sides:                   12 = 2x
  4. Divide 2 on both sides:               6 = x
  5. Rewrite:                                        x = 6

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    6 - 4(6) = 7(6) - 9(6) - 6
  2. Multiply:                               6 - 24 = 42 - 54 - 6
  3. Subtract:                              -18 = -12 - 6
  4. Subtract:                              -18 = -18

Here we see that -18 does indeed equal -18.

∴ x = 6 is the solution to the equation.

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