Question

you move left 7 units. you end at (-3, -3). where did you start?

Explanation:

Step1: Reverse left movement (x-axis)

Let starting x-coordinate be $x_s$. Moving left 7 units subtracts 7 from $x_s$ to get final $x=-3$. So:
$x_s - 7 = -3$
Solve for $x_s$: $x_s = -3 + 7 = 4$

Step2: Y-coordinate stays unchanged

Moving left doesn't affect y-coordinate. Final y is $-3$, so starting y is also $-3$.

Answer:

$(4, -3)$