Math 1. 8/21 Equations

Which step cannot be performed first when solving the equation
5 - 2(x - 7) = x + 1 + 3x

• Distributing -2 to (x - 7)

• Combining x and 3x

• Subtracting 1 from both sides

• 5 - 2

8v - 4(v + 8) = 8

• 2

• 10

• 4

• -4 

4x + 10 = -26

• 4

• -4

• -9

• 9