GOMINHA1JUJUBAON GOMINHA1JUJUBAON Matemática Respondido Exercícios: 1) Calcula: a) – 8 + 6 – 1= b) (+8) – (+5) + (+5) = c) – 13 + 7 – 2– 8 + 15 – 1= d) – 2 – 4 – 1= e) (– 8) + (– 5) – (0)= f) + 22 – 3 – 14 – 5 + 24 + 12 = g) 12 – 7 + 3 = h)(– 3) + (+ 9) – ( 0)= i) (– 2) – (– 3) + ( + 5) = j) 4 + 13 – 21= k) (+ 2) + (– 7) + (+7)= l) ( + 6) + (– 7) – (– 2) =