Comments

• (-2+5-7)-(-4+1+9)+(2-3) (-9+5)-(-4+10)+(-1) - com - multiplica - com + diminui (-4)-(6)+(-1) -10-1 -11 R= -11

  in (-2+5-7)-(-4+1+9)+(2-3) Régra dos sinais (MATEMÁTICA) FÁCIL? Comment by dale-wright_60c0da7f8f072 June 2021