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Rezolvati in Q ecuatia :
[tex](x - \frac{2}{5} ) \div 1.6 = - 4[/tex]


Răspuns :

1,6=16/10=8/5
(x-2/5):8/5= -4
x-2/5= -4×8/5
x-2/5= -32/5
x= -32/5+2/5
x= -30/5
x= -6