Question

calcule-21-7-6-(-15)-2-(-10)=

Answer 1

$\large\textsf{Vamos L\'a:}$

$\boxed{\large\textbf{Express\~ao N\'umerica}}$

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$\large\textsf{Dicas:}\\\\ \large\textsf{+ com + = +}\\\\\ \large\textsf{- com - = +}\\\\ \large\textsf{- com + = -}\\\\ \large\textsf{+ com - = -}$
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$\large\textsf{Resolu\c{c}\~ao:}$

$\mathsf{-21-7-6-(-15)-2-(-10)}$
$\mathsf{-21-7-6+15-2-(-10)}$
$\mathsf{-21-7-6+15-2+10}$
$\mathsf{-28-6+15-2+10}$
$\mathsf{-34+15-2+10}$
$\mathsf{-19-2+10}$
$\mathsf{-21+10}$

$\mathsf{-11}$
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$\large\textsf{Resposta Final:} \ \boxed{\large\mathsf{-11}}$
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Espero ter ajudado!!!
Bons Estudos!!!
;D