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1,2*x=0,144
2x-21,135=x-18,68


Răspuns :

a)1,2x=0,144
x=0,144/1,2
x=0,12



b)2x-21,135=x-18,68
2x-x=-18,68+21,135
x=2,455

Sper ca te-am ajutat