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-5x+28x-36=0
dau coroana


Răspuns :

-5x + 28 = 36
-5x = 36-28
-5x = 8
x = 8 : -5
x = -1.6
23x-36=0; 23x=36+0; 23x=36; x=36:23; x=~1.5652173913 S={1,5652173913}