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Rezolvati ecuatia :
17+(-2x)=11


Răspuns :

17+(-2x)=11 /-17......... -2x=-6 /*(-1)....... 2x=6/:2......... x=3
17-2x=11
-2x=11-17
-2x=-6 |*(-1)
2x=6
x=6:2
x=3