According to the properties of parallelograms the diagonals bisect each other. What this means is that each "half" of a diagonal is equal to each other. With this in mind you can set each half equal to each other in an equation like so...
3x + 3 = 6x - 57
Now you must combine like terms
60 = 3x
Isolate x by dividing 3 to both sides
60/3 = 3x/3
20 = x
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
x = 20
Step-by-step explanation:
The diagonals of a parallelogram bisect each other, hence
6x - 57 = 3x + 3 ( subtract 3x from both sides )
3x - 57 = 3 ( add 57 to both sides )
3x = 60 ( divide both sides by 3 )
