ZTIOSASUKEON ZTIOSASUKEON Matemática Respondido Questão 07: Faça as multiplicações: a) (+ 7) . (+ 8) = b) (– 6) . (– 4) = c) (– 7) . (– 8) = d) (– 5) . (+ 9) = e) (+ 7) . (– 8) = f) (+ 4) . (– 8) = g) (– 7) . (+ 8) = h)(– 9) . (+ 9) = i) 5 . (– 1) = j)) 7 . (– 6) =