Help?

15.6 = x

Step-by-step explanation:

(9x +82) = (12x +35)

subtract 35

(9x +82 - 35) = (12x +35 -35) =

(9x +47) = 12x

subtract 9x

(9x - 9x + 47) = 12x - 9x =

47 = 3x

divide by 3

47/3 = 3x/3

15.6 = x

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.