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Rezolvati in multimea Z ecuatia: a)x-2=-5 b)y-25=60 c)z-100=-2012

Răspuns :

a) x-2=-5
x=-5+2
x=-3
b) y-25=60
y=60+25
y=85
c) z-100=-2012
z= -2012+100
z= -1912