Final answer:
In the expression 5/7+c, there is no explicit coefficient for the variable c. The fraction 5/7 is a constant term and not a coefficient because it doesn't multiply the variable. The implied coefficient for c is '1'.
Step-by-step explanation:
The term coefficient in an algebraic expression refers to the numerical or constant factor before a variable. In the given expression 5/7+c, there is technically no coefficient directly in front of the variable c. However, if we are looking at the whole expression, the fraction 5/7 is a constant term, not a coefficient term, since it does not multiply a variable. Therefore, the expression does not have an explicit coefficient for the variable c. If there's an implied coefficient, it would be '1' because any variable without a number in front of it is multiplied by 1 by default.