[tex]\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.\end{array}}[/tex]
[tex]\large\boxed{\begin{array}{l}\sf 15\div5-10\\\sf vamos\, resolver\,a\, divis\tilde{a}o:\\\sf3-10\\\sf vamos\, resolver\,a \, subtrac_{\!\!,}\tilde{a}o:\\\sf-7\,\checkmark\end{array}}[/tex]
