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Ben
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The variable in this case is v, and no coefficient is given, so it can be assumed to be 1.

The coefficient of the variable is equal to 1

What is a coefficient

A coefficient is a value that is attached to a variable. It is the number always in front for a variable eg x, y or v in this case.

Data given;

  • [tex]\frac{1}{2} + v - 3 = v - \frac{5}{2} [/tex]

The coefficient of the variable (v) is 1 because if it is greater than 1, or less than one and cannot be equal to zero, it would be attached.

Learn more of mathematical terminologies here;

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