nandaferreiradantos
nandaferreiradantos nandaferreiradantos
  • 07-05-2020
  • Mathematics
contestada

calcule o valor numérico da expressão a seguir -2/3+1-3/2.8/9​

Respuesta :

codiepienagoya codiepienagoya
  • 13-05-2020

Answer:

The calculated value is "0.214"

Step-by-step explanation:

Given expression :

[tex]\bold {\frac{-2}{3}+ 1 -\frac{3}{\frac{2.8}{9}} }\\[/tex]

solution:

[tex]\Rightarrow \frac{-2}{3}+ 1 -\frac{3}{\frac{2.8}{9}}\\\\\Rightarrow \frac{-2}{3}+ 1 -\frac{3}{\frac{2.8}{\frac{9}{1}}}\\\\\Rightarrow \frac{-2}{3}+ 1 -\frac{3}{2.8} \times \frac{1}{9}}}\\\\\Rightarrow \frac{-2}{3}+ 1 -\frac{1}{8.4}\\\\\Rightarrow \frac{-16.8 + 25.2- 3}{25.2}\\\\\Rightarrow \frac{5.4}{25.2}\\\\\Rightarrow 0.214[/tex]

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