Solve for X: 6+3(x+4)=7-3(x-2) Linear Equation Challenge

Linear Equations with Distributive Property

Solve for X:

6+3(x+4)=73(x2) 6+3(x+4)=7-3(x-2)

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find X
00:03 Make sure to open parentheses properly, multiply by each factor
00:22 Solve each multiplication separately
00:35 Negative times negative always equals positive
00:43 Group terms
00:51 Arrange the equation so that one side has only the unknown X
01:11 Group terms
01:19 Isolate X
01:31 Simplify as much as possible
01:36 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve for X:

6+3(x+4)=73(x2) 6+3(x+4)=7-3(x-2)

2

Step-by-step solution

Let's solve the linear equation 6+3(x+4)=73(x2) 6 + 3(x + 4) = 7 - 3(x - 2) step-by-step.

Step 1: Expand the terms using the distributive property.

On the left side: 3(x+4)=3x+12 3(x + 4) = 3x + 12

On the right side: 3(x2)=3x+6 -3(x - 2) = -3x + 6

Substituting back, the equation becomes:

6+3x+12=73x+6 6 + 3x + 12 = 7 - 3x + 6

Step 2: Simplify both sides by combining like terms.

Left side: 6+12+3x=18+3x 6 + 12 + 3x = 18 + 3x

Right side: 7+63x=133x 7 + 6 - 3x = 13 - 3x

The equation now is:

18+3x=133x 18 + 3x = 13 - 3x

Step 3: Bring all terms involving x x to one side.

Add 3x 3x to both sides:

18+3x+3x=13 18 + 3x + 3x = 13

18+6x=13 18 + 6x = 13

Step 4: Isolate the variable x x .

Subtract 18 from both sides:

6x=1318 6x = 13 - 18

6x=5 6x = -5

Divide both sides by 6:

x=56 x = -\frac{5}{6}

Therefore, the solution to the problem is x=56 x = -\frac{5}{6} .

3

Final Answer

56 -\frac{5}{6}

Key Points to Remember

Essential concepts to master this topic
  • Distribution Rule: Apply distributive property to expand all parentheses first
  • Technique: Collect like terms: 18 + 3x = 13 - 3x becomes 6x = -5
  • Check: Substitute x=56 x = -\frac{5}{6} back: both sides equal 232 \frac{23}{2}

Common Mistakes

Avoid these frequent errors
  • Forgetting to distribute the negative sign
    Don't write -3(x - 2) as -3x - 6 = wrong answer! The negative distributes to both terms inside parentheses. Always remember: -3(x - 2) = -3x + 6.

Practice Quiz

Test your knowledge with interactive questions

Solve for X:

\( 6 - x = 10 - 2 \)

FAQ

Everything you need to know about this question

Why do I need to distribute before combining like terms?

+

You must expand all parentheses first to see all the terms clearly. If you skip this step, you'll miss terms and get the wrong equation to solve!

How do I handle the negative sign in front of parentheses?

+

The negative sign affects every term inside the parentheses. So -3(x - 2) becomes -3x + 6, not -3x - 6.

What if I get a fraction as my final answer?

+

Fractional answers are completely normal! Just make sure to simplify the fraction to lowest terms like 56 -\frac{5}{6} .

How can I check if my answer is correct?

+

Substitute your value back into the original equation. Both sides should give you the same number when you calculate them out.

Why do I move all x terms to one side?

+

Moving all x terms to one side and all numbers to the other side helps you isolate x. This is the key step to solving any linear equation!

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Linear Equations (One Variable) questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations