Find the variables and the terms in the following algebraic expressions.
`2r+7p-3pq`

Answer

To solve the problem of finding the variables and terms in the algebraic expression \(2r + 7p - 3pq\), we will follow these steps:

### Step 1: Identify the Terms
A term in an algebraic expression is a part of the expression that is separated by a plus (+) or minus (-) sign.

In the expression \(2r + 7p - 3pq\):
- The first term is \(2r\)
- The second term is \(7p\)
- The third term is \(-3pq\)

So, the terms are:
1. \(2r\)
2. \(7p\)
3. \(-3pq\)

### Step 2: Identify the Variables
A variable is a symbol that represents an unknown value and can change.

In the expression \(2r + 7p - 3pq\):
- The variables present are:
- \(r\) from the term \(2r\)
- \(p\) from the term \(7p\) and also from the term \(-3pq\)
- \(q\) from the term \(-3pq\)

So, the variables are:
1. \(r\)
2. \(p\)
3. \(q\)

### Final Answer
- **Terms**: \(2r, 7p, -3pq\)
- **Variables**: \(r, p, q\)

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