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Ma ajuta cine-va va rog sa rezolv ecuatia : X(9-2)+2+2-1-5+X(2+2)=59-X

Răspuns :

7X+4X+X=59-2-2+1+5, adica, 12X= 61 =>x=61/12
Cam ciudat, dar asta e rezolvarea.
=9x-2x+2+2-1-5+2x+2x=59-x
11x-2=59-x
11x+x=59+2
12x=61/:12
x=5,08(3)