Question

Difficulty: EasySolving One-Variable Linear Equations

Determine the numerical value of the variable that satisfies the given linear equation.

Answer:For the equation 7k−5=3k+197k - 5 = 3k + 19, the value of kk is 【6】.

Answer

The correct value for k is 6.
To find the value of kk, we must isolate the variable on one side of the equation. By subtracting 3k3k from both sides, we get 4k−5=194k - 5 = 19. Next, adding 55 to both sides gives 4k=244k = 24. Finally, dividing both sides by 44 results in k=6k = 6.

Step-by-Step Solution

1
Subtract 3k3k from both sides of the equation.
4k−5=194k - 5 = 19
This groups all variable terms on the left side of the equation.
2
Add 55 to both sides of the equation.
4k=244k = 24
This isolates the variable term by moving the constant to the right side.
3
Divide both sides by 44.
k=6k = 6
This cancels the coefficient on the variable, yielding the final solution.

Key Concept

Solving linear equations with variables on both sides by using inverse operations to isolate the unknown.
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