3 years ago

Anyone know this?? Thanks

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

8 0

9514 1404 393

Answer:

x = 4

Step-by-step explanation:

The figure is a rhombus when the sides are the same length.

21 -x = 2x +9

12 = 3x . . . . . . . . add x-9 to both sides

4 = x . . . . . . . . . . divide by 3

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