Elimine os Parenteses
Relembre a Regra de sinais:
[tex] \boxed{ \large + } \boxed{ \large com } \boxed{ \large + } = \boxed{ \large+ } \\\boxed{ \large+ } \boxed{ \large com } \boxed{ \large - } = \boxed{ \large - } \\ \boxed{ \large - } \boxed{ \large com } \boxed{ \large - } = \boxed{ \large + } \\\boxed{ \large- } \boxed{ \large com } \boxed{ \large + } = \boxed{ \large - } [/tex]
[tex]\boxed{\begin{array}{lr} \\ \large \sf \: (-5) + (-2) + (43) \\ \\ \large \sf \: - 5 - 2 + 43 \\ \\ \large \sf- 7 + 43 \\ \\ \boxed{ \boxed{ \huge\sf = 36}} \\ \: \end{array}}[/tex]
