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# How do you solve k = 8k + 28?

Last updated date: 12th Sep 2024
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Hint:This is a linear equation in one variable as there is only one variable in an equation. In the given question, the variable is the letter ‘k’, to solve this question we need to get ‘k’ on one side of the “equals” sign, and all the other numbers on the other side. To solve this equation for a given variable ‘k’, we have to undo the mathematical operations such as addition, subtraction, multiplication and division that have been done to the variables.

Complete step by step solution:
We have the given equation;
k = 8k + 28
Subtract k from both the sides of the equation,
k - k = 8k + 28 - k
Simplify, subtract the numbers
0 = 7k + 28
Subtract 28 from both the sides of the equation,
0 – 28 = 7k + 28 - 28
Simplify the numbers, we get
-28 = 7k
Rewriting the equation, we get
7k = -28
Dividing both the sides by 7, we get
k = -4
Therefore, the possible value of k is equals to 4.