florence-moore_6095d71506179
florence-moore_6095d71506179
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Resposta = -11 Regras..Olha, é muito simples. 3+(-6) = 3-6 = -3 3-(-6) = 3+6 = 9 6-(+3) = 6-3 = 3 6+(+3) = 6+3 = 9 Calculo (-2+5-7)-(-4+1+9)+(2-3) = (-4)-(+6)+(-1)= - 4 - 6 - 1 = -11 ok...