Question

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

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Answer 1

Răspuns:

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

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

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

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