Gabygabrielalopesgo Gabygabrielalopesgo Matemática Respondido 6- Efetue as multiplicações: a)(+3) . (+2) = b)(+8) . (-4) = c)(+10) .(+9) = d)(−4) .(−7) = e)(−4) .(−5). (+2) = f)(−7) .(+2) . (−1) = g)(−3) . (8 + 4) = h)(+5) . (10 + 3) =