Question 492117
-4 = 2/5a


multiply both sides of the equation by a to get:


-4a = 2/5


divide both sides of the equation by -4 to get:


a = -2/20 = -1/10


replace a in your original equation to get:


-4 = 2/5*(-1/10) which becomes:


-4 = 2/(-5/10) which becomes:


-4 = 2/(-.5) which becomes:


-4 = -4


the value of a = -1/10 is good.


in decimal form, that's a = -.1