How is 2x-3-(x+1) and -3+2x-(x+1) the same? (explain)​

|1–2x|≥3⇔∣∣x−12∣∣≥32

Since the two points at a distance 32 from 12 are 12+32=2 and 12−32=−1, points x whose distance from 12 is at least 32 are those that are either (i) on or to the left of −1 or (ii) on or to the right of 2.

In other words,

{x∈R:|1–2x|≥3}=(−∞,−1]⋃[2,∞). ■_

answer: b

step-by-step explanation:

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.