Solve for z:57=−10z+7

To solve for z, we can start by isolating the variable z on one side of the equation:

57 = -10z + 7
First, we can subtract 7 from both sides of the equation:
57 - 7 = -10z + 7 - 7
50 = -10z
Next, we can divide both sides of the equation by -10:
50 / -10 = -10z / -10
-5 = z

Therefore, z = -5.