PLEASE PLEASE PLEASE HELP!! Can someone please help me with a step by step of this problem ? I'll seriously appreciate it, and thank you so so so much in advance!! DON'T ANSWER IF YOU'RE UNSURE!!! I need actual help, please don't just take my points. (: Thank you!

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In  triangles BED and ABC, 1) ∠BED=∠BDE(BECAUSE THEY ARE CORRESPONDING ANGLES) 2)∠BCA=∠BAC(SAME REASON AS ABOVE) ∴ TRIANGLES ARE SIMILAR.. NOW, since they are proved similar, we can write that, BE/BC=BD/BA On placing the respective values...just evaluate.. 12/28=x-3/2x-3 ⇒x=12 units...........

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