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Which is the correct solution to the given equation?

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answer is D.

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Detailed Solution

Concept-
This is a question on a linear equation in one variable, and as we can see in the question, a linear equation in one variable is one that can be represented as

. However, coming back to the basics, an equation is made up of constants, variables, and operators.
In this question, the given equation is

. Now we will find the value of n by subtracting 49 from both sides.

Further, we will divide both sides of the equation by 7

Hence, the correct answer is an option 4) 64

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