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Answer:
x = 11
Step-by-step explanation:
All the sides of a rhombus are equal, so you can set the equations equal to one another.
2x + 46 = 7x - 9
Subtract 2x from both sides
46 = 5x - 9
Add 9 to both sides
55 = 5x
Divide both sides by 5
x = 11
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