Algebra-1

The correct answer is D. The value for the variable in the equation.

A solution of an equation refers to the value or values that make the equation true when substituted for the variable(s) in the equation. It represents the specific value(s) that satisfy the given equation.

For example, consider the equation 2x + 3 = 9. The value of x that makes this equation true is x = 3. Substituting x = 3 into the equation, we get 2(3) + 3 = 9, which simplifies to 6 + 3 = 9, and indeed, the equation is true.

Option A, "A vari...