resolva as equações : a) x/2=8, b) x/2 = -8 , c) 3x/4 = 9 e d) 2x/3 = -10

a) x/2=8 x=8*2 x=16 b) x/2=-8 x=-8*2 x=-16 c) 3x/4=9 3x=4*9 3x=36 x=36/3 x=12 d) 2x/3=-10 2x=-10*3 2x=-30 x=-30/2 x=-15