Question

1. Calcule o valor da expressão numérica: [-22 +3.4] :5=
????​

Answer 1

$\Large\boxed{\begin{array}{l} \sf Em\,uma\,express\tilde{a}o\,num\acute{e}rica\,resolvemos:\\\sf1^a\, pot\hat{e}ncias\,e\,ra\acute{i}zes\, na\, ordem\, que \,vier\\\sf 2^a\, multiplicac_{\!\!,}\tilde{a}o \,e \,divis\tilde{a}o \,na\, ordem \,que \,vier\\\sf 3^a\,adic_{\!\!,}\tilde{a}o\, e \,subtrac_{\!\!,}\tilde{a}o\, na\, ordem\, que\, vier.\\\sf Al\acute{e}m\,disso\, eliminar-se:\\\sf 1^\circ\,\bigg(~\bigg)\rightarrow par\hat{e}nteses\\\\\sf 2^\circ\,\bigg[~\bigg]\rightarrow colchetes\\\\\sf 3^\circ\,\bigg\{~\bigg\}\rightarrow chaves\end{array}}$

$\LARGE\boxed{\begin{array}{l}\sf[-22+3\cdot4]:5\\\sf [-22+12]:5\\\sf[-10]:5\\\sf -10:5\\\sf-2\\\huge\boxed{\boxed{\boxed{\boxed{\sf [-22+3\cdot4]:5=-2}}}}\end{array}}$