Respuesta :
-5 x 4 = -20
-5 x -2z = 10z
-20 + 10z
Divide both by 10. The 10 in 10z will be canceled and -20 will be -2.
Z= -2
-5 x -2z = 10z
-20 + 10z
Divide both by 10. The 10 in 10z will be canceled and -20 will be -2.
Z= -2