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5x{25x8-[221-(56x4-213)x11]x2}+597

Răspuns :

5x{25x8-[221-(56x4-213)x11]x2}+597 =

 5x{200-[221-(224-213)x11]x2}+597=

5x[200-(221-11x11)x2]+597=

5x[200-(221-121)x2]+597=

5x(200-100x2)+597=

5x(200-200)+597=
5x0+597=
597