How do i solve this?

x = 2

Step-by-step explanation:

Set up a proportion. Use the big triangle (whose left side is 6 + 4) and the top triangle.

6/(6 + 4) = (x + 1) / (x + x+1)

6/10 = (x + 1 ) / (2x + 1)                Reduce the left side

3/5 = (x + 1) / (2x + 1)                  Cross Multiply

3*(2x + 1) = 5*(x + 1)                    Remove the brackets

6x + 3 = 5x + 5                           Subtract 5x from both sides

6x-5x + 3 = 5                              Combine the left

x + 3 = 5                                      Subtract 3 from both sides

x = 2

hi, i am not sure about this one but i think its d,

hope this !