Solve Linear Equation: 11(-3x+4)-7(6x-2)=3 Step-by-Step

11(3x+4)7(6x2)=3 11(-3x+4)-7(6x-2)=3

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:04 Open brackets properly, multiply by each factor
00:23 Solve each multiplication separately
00:50 Collect terms
01:01 Arrange the equation so that X is isolated on one side
01:20 Isolate X
01:33 Break down 55 into factors 5 and 11
01:36 Break down 75 into factors 5 and 15
01:39 Simplify what's possible
01:44 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

11(3x+4)7(6x2)=3 11(-3x+4)-7(6x-2)=3

2

Step-by-step solution

To solve the linear equation 11(3x+4)7(6x2)=3 11(-3x+4)-7(6x-2)=3 , follow these steps:

Begin by applying the distributive property to the expression on both sides:

  • Distribute 11 11 : 11(3x+4)=11(3x)+114=33x+44 11(-3x+4) = 11 \cdot (-3x) + 11 \cdot 4 = -33x + 44 .
  • Distribute 7 -7 : 7(6x2)=76x+7(2)=42x+14 -7(6x-2) = -7 \cdot 6x + -7 \cdot (-2) = -42x + 14 .

Substitute these results back into the equation:

33x+4442x+14=3 -33x + 44 - 42x + 14 = 3

Combine like terms:

(33x42x)+(44+14)=3 (-33x - 42x) + (44 + 14) = 3

75x+58=3 -75x + 58 = 3

Isolate the term with x x by subtracting 58 from both sides:

75x=358 -75x = 3 - 58

75x=55 -75x = -55

Now, solve for x x by dividing both sides by 75-75:

x=5575 x = \frac{-55}{-75}

Simplify the fraction by dividing both numerator and denominator by 5:

x=1115 x = \frac{11}{15}

Therefore, the solution to the equation is 1115\boxed{\frac{11}{15}}.

3

Final Answer

1115 \frac{11}{15}

Practice Quiz

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Solve for x:

\( 2(4-x)=8 \)

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