CONSTRUCT AN ARGUMENT A student said that for $x-7=-15$, the value of $x$ can be any value. Is the student correct? Write an argument that can be used to defend your response.
7. Give an example of an addition equation and a subtraction equation that each have a solution of 10 .

Answer

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Answer

A subtraction equation with a solution of 10: $15 - 5 = 10$

Steps

Step 1 ：The student's claim is incorrect. Solve the equation: $x - 7 = -15$

Step 2 ：Add 7 to both sides: $x = -8$

Step 3 ：\boxed{x = -8} is the unique solution.

Step 4 ：An addition equation with a solution of 10: $3 + 7 = 10$

Step 5 ：A subtraction equation with a solution of 10: $15 - 5 = 10$