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calculati: e) 10-10:{1+3x[(57-60:4x2):3+21]:10}

Răspuns :

   10-10:{1+3x[(57-60:4x2):3+21]:10}
= 10-10:{1+3x[(57-15x2):3+21]:10}
= 10-10:{1+3x[(57-30):3+21]:10}
= 10-10:[1+3x(27:3+21):10]
= 10-10:[1+3x(9+21):10]
= 10-10:(1+3x30:10)
= 10-10:(1+90:10)
= 10-10:(1+9)
= 10-10:10
= 10-1
= 9  sper ca te-am ajutat