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Alexa253
a fost răspuns

Calculati [1,2(6)+3,(6)-3,5]:0,4(3)

Răspuns :

[1,2(6)+3,(6)-3,5]:0,4(3)=[(126-12)/90+(36-3)/9-35/10]:(43-4)/90=(114/90+33/9-35/10) : 39/90(114/90+330/90-35·9/90): 39/90=(114/90+330/90-315/90):39/90=(114+330-315)/90 : 39/90=129/90 · 90/39= 43/1 · 1/13=43/13

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