How we can configure portchannel(Lacp) in cisco Nexus 9k connected with non cisco device or with L3 cisco device?

For Nexus 9K

Enable LACP if you want LACP based port channels. All Layer 2 member ports must run in full-duplex mode and at the same speed.

Interface e1/1

channel-group channel-number [force ] [mode {on | active | passive }]

Force keyword Forces an interface with some incompatible configurations to join the channel.

For Cisco 3850

int g1/0/9

channel-group channel-number mode { on | active | passive }