The answer is 42 cause you do ( 18*28=12x) wich is 504=12x which equals 42
-1.55 is a mixed number... the answer is:
-1 11/20
Let O be the point of intersection of diagonals.
Consider triangles FOE and EOD:
FO = OD, ∠FOE = ∠EOD and OE is a common side ⇒
triangles FOE and EOD are congruent.
In congruent triangles all corresponding sides and are congruent ⇒
EF = DE = 6
Hello!

Explanation:
↓↓↓↓↓↓↓↓↓↓↓↓↓
First you had to subtract by 2 from both sides of the equation.

Simplify

Then you divide by 3 from both sides of the equation.

Simplify it should be the correct answer.

Answer⇒⇒⇒⇒⇒x=88/3
Hope this helps!
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-Charlie
11 hours bc 5 times 11 equals 55