#### Answer:

**Definitions:**

A **term** in an algebraic expression can be a constant, a variable or a product of constants and variables separated by the signs of addition (+) or subtraction ($-$) . Examples: 27, *x*, *xyz*, $\frac{1}{2}{x}^{2}yz$ etc.

The number factor of the term is called its **coefficient**.

(i) The expression $7{x}^{2}yz-5xy$ consists of two terms, i.e., $7{x}^{2}yz$ and $-5xy$.

The coefficient of $7{x}^{2}yz$ is 7 and the coefficient of $-5xy$ is $-5$.

(ii) T…

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