Solve for X: Complex Fraction Equation with 100/25 and 144/12x Terms

Linear Equations with Fraction Simplification

Solve for X:

10025+14412x3311=568x357x+182 \frac{100}{25}+\frac{144}{12}x-\frac{33}{11}=\frac{56}{8}x-\frac{35}{7}x+\frac{18}{2}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find X
00:03 Calculate all division quotients
00:27 Group factors
00:40 Arrange the equation so that X is isolated on one side
00:55 Isolate X
01:03 Factor 8 into 4 and 2
01:08 Factor 10 into 5 and 2
01:14 Simplify where possible
01:19 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:

10025+14412x3311=568x357x+182 \frac{100}{25}+\frac{144}{12}x-\frac{33}{11}=\frac{56}{8}x-\frac{35}{7}x+\frac{18}{2}

2

Step-by-step solution

To solve this problem, we'll proceed through the following steps:

  • Step 1: Simplify each fraction in the equation.
  • Step 2: Combine like terms on both sides.
  • Step 3: Solve for x x .

Let's work through these steps:

Step 1: Simplify each fraction:
10025=4\frac{100}{25} = 4, 14412=12\frac{144}{12} = 12, 3311=3\frac{33}{11} = 3, 568=7\frac{56}{8} = 7, 357=5\frac{35}{7} = 5, 182=9\frac{18}{2} = 9.

Now our equation becomes:

4+12x3=7x5x+94 + 12x - 3 = 7x - 5x + 9

Step 2: Simplify and combine like terms:
On the left side: 43+12x=1+12x4 - 3 + 12x = 1 + 12x
On the right side: 7x5x+9=2x+97x - 5x + 9 = 2x + 9

The equation now is:

1+12x=2x+91 + 12x = 2x + 9

Step 3: Solve for x x :
Subtract 2x2x from both sides:
1+10x=91 + 10x = 9
Subtract 11 from both sides:
10x=810x = 8
Divide both sides by 1010:
x=810=45x = \frac{8}{10} = \frac{4}{5}

Therefore, the solution to the problem is x=45 x = \frac{4}{5} .

3

Final Answer

45 \frac{4}{5}

Key Points to Remember

Essential concepts to master this topic
  • Fraction Rule: Always simplify fractions before combining like terms
  • Technique: Collect x-terms on one side: 12x2x=10x 12x - 2x = 10x
  • Check: Substitute x=45 x = \frac{4}{5} back into original equation ✓

Common Mistakes

Avoid these frequent errors
  • Forgetting to simplify fractions first
    Don't leave fractions like 144/12 unsimplified = makes calculations unnecessarily complex! You'll make arithmetic errors and miss the straightforward path. Always simplify each fraction to its lowest terms before solving.

Practice Quiz

Test your knowledge with interactive questions

Solve for X:

\( 6 - x = 10 - 2 \)

FAQ

Everything you need to know about this question

Do I have to simplify fractions like 100/25 first?

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Yes! Simplifying fractions like 10025=4 \frac{100}{25} = 4 makes the equation much easier to work with. It prevents calculation errors and helps you see the pattern clearly.

How do I combine like terms with coefficients?

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Group all x-terms together and all constant terms together. For example: 12x7x+5x=10x 12x - 7x + 5x = 10x . Just add or subtract the coefficients!

What if I get confused with positive and negative terms?

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Write down each step carefully! When moving terms across the equals sign, change their signs. If you have 12x=2x+8 12x = 2x + 8 , subtract 2x 2x from both sides to get 10x=8 10x = 8 .

Why is my final answer a fraction?

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Fractional answers are completely normal! When you get x=810 x = \frac{8}{10} , just simplify it to 45 \frac{4}{5} by dividing both numerator and denominator by their GCD.

How can I check if x = 4/5 is correct?

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Substitute x=45 x = \frac{4}{5} into the original equation. Calculate both sides separately. If you get the same value on both sides, your answer is right!

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