Solve for X: -3(1/2x + 4) = 1/2 Linear Equation Solution

Solve for x:

3(12x+4)=12 -3(\frac{1}{2}x+4)=\frac{1}{2}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:06 Let's find the unknown value of X together.
00:10 First, open the parentheses properly and multiply each term inside.
00:21 Next, multiply everything by 2 to get rid of any fractions.
00:36 Now, arrange the equation so that X is all by itself on one side.
00:44 Time to collect like terms.
00:48 Then, isolate X to find its value.
00:56 And just like that, we've solved the problem for X!

Step-by-step written solution

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1

Understand the problem

Solve for x:

3(12x+4)=12 -3(\frac{1}{2}x+4)=\frac{1}{2}

2

Step-by-step solution

We open the parentheses on the left side by the distributive property and use the formula:

a(x+b)=ax+ab a(x+b)=ax+ab

32x12=12 -\frac{3}{2}x-12=\frac{1}{2}

We multiply all terms by 2 to get rid of the fractions:

3x12×2=1 -3x-12\times2=1

3x24=1 -3x-24=1

We will move the minus 24 to the right section and keep the corresponding sign:

3x=24+1 -3x=24+1

3x=25 -3x=25

Divide both sections by minus 3:

3x3=253 \frac{-3x}{-3}=\frac{25}{-3}

x=253 x=-\frac{25}{3}

3

Final Answer

253 -\frac{25}{3}

Practice Quiz

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Solve for x:

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

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