Solve the Linear Equation: -3(x+4) - 5x + 5 = 3 - 4(x-2) + 5x

Solve for X:

3(x+4)5x+5=34(x2)+5x -3(x+4)-5x+5=3-4(x-2)+5x

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find X
00:04 Open parentheses properly, multiply by each factor
00:22 Collect like terms
00:49 Arrange the equation so that X is isolated on one side
01:07 Collect like terms
01:13 Isolate X
01:21 And this is the solution to the problem

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve for X:

3(x+4)5x+5=34(x2)+5x -3(x+4)-5x+5=3-4(x-2)+5x

2

Step-by-step solution

To solve this equation, we will break it down into simpler steps:

3(x+4)5x+5=34(x2)+5x -3(x+4)-5x+5=3-4(x-2)+5x

  • Step 1: Apply the distributive property to both sides.
    Left Side: 3(x+4)=3x12-3(x+4) = -3x - 12
    So, 3(x+4)5x+5=3x125x+5-3(x+4)-5x+5 = -3x - 12 - 5x + 5
    Right Side: 4(x2)=4x+8-4(x-2) = -4x + 8
    So, 34(x2)+5x=34x+8+5x3 - 4(x-2) + 5x = 3 - 4x + 8 + 5x

  • Step 2: Simplify both sides by combining like terms.
    Left Side: Combine like terms 3x5x12+5=8x7-3x - 5x - 12 + 5 = -8x - 7
    Right Side: Combine like terms 4x+5x+3+8=x+11-4x + 5x + 3 + 8 = x + 11

  • Step 3: Set the simplified forms equal: 8x7=x+11-8x - 7 = x + 11

  • Step 4: Solve for x x by manipulating the equation:
    Add 8x 8x to both sides: 7=9x+11-7 = 9x + 11
    Subtract 11 from both sides: 18=9x-18 = 9x
    Divide by 9: x=2 x = -2

Therefore, the solution to the problem is x=2 x = -2 , which matches choice 2.

3

Final Answer

-2

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\( x+x=8 \)

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