Заполни пропуски 3z+9000=15000
3z+9000 _ _ _ _ _ = 15000 _ _ _ _ _
3z _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ __ _ _ __ _ __ _
3z+9000 _ _ _ _ _ = 15000 _ _ _ _ _
3z _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ __ _ _ __ _ __ _