Can someone me understand this? 2 + 3(x+1) = 6x

2 + 3(x + 1) = 6x
2 + 3x + 3 = 6x 
*You are multiplying from inside the parentheses*
2 + 3 +3x = 6x
*Now add the numbers without the variables (x)*
5 + 3x = 6x
*Now write 5 first and add the variables together*
5 = 9x
*Switch it*
9x = 5
x = 5 divided by 9 or 5 x 1/9
x = 5/9

Hope this helps :3

X=-1 so the answer is x=-1
 so this is the correct answer

Volume of a cylinder: V = π * r² * h,
Base surface area of a cylinder: A_b = 2 * π * r²,
Lateral surface area of a cylinder: A_l = 2 * π * r * h,
Total surface area of a cylinder: A = A_b + A_l,
Longest diagonal of a cylinder: d² = 4 * r² + h²,
Surface-area-to-volume ratio of a cylinder: SA:V = A / V = 2 * (r + h) / (r * h)