it is -4
Step-by-step explanation:
if you do it From left to right it's -4
Anything times zero is zero. So the answer to your question would be 0.
The angles of a parallelogram add up to 360°
and the opposite angles are equal
so you make the equation: 150+150+5x+5x=360
you solve for x
10x=60
x=6
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Each square unit is 11 in each side