Solve for X in the Linear Equation: 5x + 6 = 56 for Accurate Results

Linear Equations with Constant Terms

5x+6=56 5x+6=56

How much is X X worth?

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:02 We will subtract 6 from both sides to isolate the unknown
00:31 We will divide by 5 to find the value of one unknown

Step-by-step written solution

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1

Understand the problem

5x+6=56 5x+6=56

How much is X X worth?

2

Step-by-step solution

To solve the equation 5x+6=56 5x + 6 = 56 , we will follow these steps:

  • Step 1: Subtract 6 from both sides of the equation to eliminate the constant term on the left-hand side.
  • Step 2: Simplify the resulting equation.
  • Step 3: Divide both sides by 5 to isolate x x .

Now, perform each step:

Step 1: Subtract 6 from both sides:
5x+66=566 5x + 6 - 6 = 56 - 6

Step 2: Simplify both sides:
5x=50 5x = 50

Step 3: Divide both sides by 5 to solve for x x :
x=505 x = \frac{50}{5}

Step 4: Simplify the division:

x=10 x = 10

Therefore, the solution to the problem is x=10 x = 10 .

3

Final Answer

10 10

Key Points to Remember

Essential concepts to master this topic
  • Rule: Isolate the variable by performing inverse operations on both sides
  • Technique: Subtract 6 from both sides: 5x + 6 - 6 = 56 - 6
  • Check: Substitute back: 5(10) + 6 = 50 + 6 = 56 ✓

Common Mistakes

Avoid these frequent errors
  • Dividing by the coefficient before removing the constant term
    Don't divide 5x + 6 = 56 by 5 to get x + 6/5 = 56/5! This creates messy fractions and makes the problem harder. Always subtract the constant term first, then divide by the coefficient.

Practice Quiz

Test your knowledge with interactive questions

Find the value of the parameter X

\( \frac{1}{3}x=\frac{1}{9} \)

FAQ

Everything you need to know about this question

Why do I subtract 6 from both sides instead of just moving it?

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When you subtract 6 from both sides, you're maintaining the balance of the equation. Think of it like a scale - whatever you do to one side, you must do to the other to keep it balanced!

What if I accidentally add 6 instead of subtract?

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Adding 6 would give you 5x+12=62 5x + 12 = 62 , making the problem harder! Remember: to eliminate a positive 6, you must subtract 6 from both sides.

Can I divide by 5 first instead of subtracting 6?

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You could, but it creates fractions: x+65=565 x + \frac{6}{5} = \frac{56}{5} . It's much easier to subtract the constant first, then divide by the coefficient.

How do I check if x = 10 is correct?

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Substitute 10 for x in the original equation: 5(10)+6=50+6=56 5(10) + 6 = 50 + 6 = 56 . Since this equals 56, your answer is correct!

What does 'isolate the variable' mean?

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Isolating the variable means getting x by itself on one side of the equation. You do this by undoing all the operations around x using inverse operations.

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