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2,7(1) x 30 + 0,0(5) x2 +1,(5)=
16,(38)-14,(6)+16,(3) : 1

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Răspuns :

Răspuns:

2,7(1)×30+0,0(5)×2+1,(5)=2[tex]\frac{71-7}{90}[/tex]×30+[tex]\frac{5}{90}[/tex]×2+1[tex]\frac{5}{9}[/tex]=2[tex]\frac{64}{3}[/tex]+[tex]\frac{5}{45}[/tex]+[tex]\frac{14}{9}[/tex]=

=[tex]\frac{2*3+64}{3}+\frac{1}{9}+\frac{14}{9} =\frac{3)70}{3} +\frac{15}{9} =\frac{210+15}{9} =\frac{225(9}{9} =25[/tex]

16,(38)-14,(6)+16,(3) : 1=[tex]16\frac{38}{99}-14\frac{6}{9} +16\frac{3}{9}=\frac{16*99+38}{99}-\frac{14*9+6}{9} +\frac{16*9+3}{9} =\frac{1622}{99}-\frac{11)132}{9} +\frac{11)147}{9} =\frac{1622-1452+1617}{99}=\frac{1787}{99}[/tex]

Explicație pas cu pas: