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Rezolvati in Z ecuatiile:
a) 2x+3=-7
b)3(x+5)-2=2(x-1)-5
c)5(x-7)-3(x-3)+17=11
Rezolvarea completa,dau coroana cine o face va rog !!!!!!


Răspuns :

b) 3x+15-2=2x-2-5
3X+13=2x-7
x=-20
c) 5x-21-3x+9+17=11
2x+5=11
2x=6
x=3