Question

efetue as subtracoes.
(+10)-(-9)=​

Answer 1

Boa Tarde !!!

$(+10)-(-9)\\\\\\Lembrando\ que :\\\\\\+ .\ + = +\\\\\\- .\ - = +\\\\\\+ .\ - = -\\\\\\- .\ + = -\\\\\\10 + 9\\\\\\Resposta = 19$

Espero ter ajudado :-)

Att: LDC