Math Problem Statement

3x - 5 = -x + 7, solve for x.

Solution

The given equation is:

3x5=x+73x - 5 = -x + 7

Step 1: Move all terms involving xx to one side

Add xx to both sides:

3x+x5=73x + x - 5 = 7

4x5=74x - 5 = 7

Step 2: Isolate xx

Add 5 to both sides:

4x=124x = 12

Step 3: Solve for xx

Divide by 4:

x=124=3x = \frac{12}{4} = 3

Final Answer:

x=3x = 3

Would you like a detailed explanation of any step?

Here are five related questions to explore further:

  1. How do you check if your solution for xx is correct?
  2. What happens if the equation has no solution?
  3. How would the solution change if the equation were 3x5=x73x - 5 = -x - 7?
  4. Can you solve an equation with fractions, such as 3x25=x+7\frac{3x}{2} - 5 = -x + 7?
  5. How do you solve equations where xx appears in the denominator, like 3x5=x+7\frac{3}{x} - 5 = -x + 7?

Tip: Always check your solution by substituting the value of xx back into the original equation.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

Solving linear equations

Theorems

Isolation of variables

Suitable Grade Level

Grades 6-8