Solve Linear Equation: 4x - 6.9 = 2.2x + 5

4x6.9=2.2x+5 4x-6.9=2.2x+5

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Step-by-step video solution

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00:00 Solve
00:03 We want to isolate the unknown X
00:07 Let's arrange the equation so that one side will have only the unknown X
00:33 Let's isolate the unknown X
00:45 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

4x6.9=2.2x+5 4x-6.9=2.2x+5

2

Step-by-step solution

To solve this problem, follow these steps:

  • Step 1: Identify the equation and its components. The equation is 4x6.9=2.2x+54x - 6.9 = 2.2x + 5.
  • Step 2: Move the terms involving xx to one side of the equation. Subtract 2.2x2.2x from both sides:
    4x2.2x6.9=54x - 2.2x - 6.9 = 5.
  • Step 3: Combine like terms on the left side:
    1.8x6.9=51.8x - 6.9 = 5.
  • Step 4: Move constant terms to the other side by adding 6.96.9 to both sides:
    1.8x=5+6.91.8x = 5 + 6.9.
  • Step 5: Simplify the equation on the right side:
    1.8x=11.91.8x = 11.9.
  • Step 6: Solve for xx by dividing both sides by 1.81.8:
    x=11.91.8x = \frac{11.9}{1.8}.
  • Step 7: Simplify the fraction if possible:
    Converting 11.91.8\frac{11.9}{1.8} to a mixed number, x=61118x = 6\frac{11}{18}.

Therefore, the solution to the equation is x=61118x = 6\frac{11}{18}.

3

Final Answer

x=61118 x=6\frac{11}{18}

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Solve for X:

\( 5x=25 \)

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