X=3 hope this helps sorry if I’m wrong
Answer:
Explanation:
We know that the diagonals of the parallelogram intersect in half.
Therefore we hawe the equation:
x - 30 = -9 - 6x add 30 to both sides
x = 21 - 6x add 6x to both sides
7x = 21 divide both sides by 7
x = 3
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