Find the Domain 5x+9=7x+21

Problem

5*x+9=7*x+21

Solution

1. Identify the type of expression given. The equation 5*x+9=7*x+21 is a linear equation involving polynomial terms.

2. Determine if there are any restrictions. Polynomials are defined for all real numbers because they do not contain even roots of negative numbers, logarithms of non-positive numbers, or denominators that could equal zero.

3. Conclude the domain. Since there are no values of x that make the expression undefined, the domain consists of all real numbers.

Final Answer

Domain: *(−∞,∞)

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