Math Problem Statement

Which equation has the solution x, equals, 7x=7?

Answer

Multiple Choice Answers

9, x, minus, 3, equals, 609x−3=60

4, x, plus, 6, equals, 324x+6=32

7, x, minus, 8, equals, 767x−8=76

3, x, minus, 1, equals, minus, 203x−1=−20

Solution

We need to find which of the given equations has x=7x = 7 as the solution. Let's check each one by substituting x=7x = 7 into the equations.

  1. Equation: 9x3=609x - 3 = 60
    Substitute x=7x = 7: 9(7)3=633=609(7) - 3 = 63 - 3 = 60 This equation is true when x=7x = 7.

  2. Equation: 4x+6=324x + 6 = 32
    Substitute x=7x = 7: 4(7)+6=28+6=344(7) + 6 = 28 + 6 = 34 This equation is not true when x=7x = 7.

  3. Equation: 7x8=767x - 8 = 76
    Substitute x=7x = 7: 7(7)8=498=417(7) - 8 = 49 - 8 = 41 This equation is not true when x=7x = 7.

  4. Equation: 3x1=203x - 1 = -20
    Substitute x=7x = 7: 3(7)1=211=203(7) - 1 = 21 - 1 = 20 This equation is not true when x=7x = 7.

The correct equation that has x=7x = 7 as the solution is the first one: 9x3=609x - 3 = 60

Would you like more details or have any questions?

Here are some related problems:

  1. Which equation has the solution x=5x = 5?
  2. Solve 5x+2=275x + 2 = 27 and check the solution.
  3. Which equation has the solution x=10x = 10?
  4. Solve 2x7=132x - 7 = 13.
  5. Which equation has the solution x=4x = -4?
  6. Solve 8x+3=678x + 3 = 67.
  7. Which equation has the solution x=3x = 3?
  8. Solve 6x4=326x - 4 = 32.

Tip: When solving equations, always substitute the solution back into the original equation to verify that it satisfies the equation.

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Math Problem Analysis

Mathematical Concepts

Equations
Substitution

Formulas

Equation solving

Theorems

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Suitable Grade Level

High school