Algebra-1

The answer should be B. subtract 7 from both sides.

In the given equation, x - (-7) = -17, the expression "-(-7)" simplifies to "+7". Therefore, the equation can be rewritten as x + 7 = -17. To isolate "x", we need to perform the inverse operation, which is subtracting 7. By subtracting 7 from both sides of the equation, we maintain the equality of the equation.

Subtracting 7 from both sides gives us:

x + 7 - 7 = -17 - 7