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1) 8x(0,125xZ)-0,3 =0,7
2)4,6x +3,8x - 1,6 = 0,5
Rezolvati ecuatiile !


Răspuns :

a)
8x(0.125 x Z) - 0.3 = 0.7 / + 0.3
8x (0.125 x Z ) = 1 / : 8
0.125 x Z =0.125 / : 0.125
 Z=1

b)
4.6x + 3.8x - 1.6=0.5
8.4x - 1.6 = 0.5 / + 1.6
8.4x=2.1 / : 8.4
x=0.25