This is a similar triangle please find the missing length. (?)

33

Step-by-step explanation:

, insert given values

, cross multiply

84*?=36*77

84*?=2772, divide both sides by 84 to get ? by itself

?=33

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

y=mx+b is the final answer!   : )