Solve for the unknown variable.
19 = 3y - 5

y=8

Step-by-step explanation:

Step 1: Flip the equation.

3y−5=19

Step 2: Add 5 to both sides.

3y−5+5=19+5

3y=24

Step 3: Divide both sides by 3.

3y

3

=

24

3

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.