can 1 mikrotik router support this condition?

I have mikrotik router RB1100AHx2 , come with 13 port.

I have 5 ISP :
ISP A
ISP B
ISP C
ISP D
ISP E

I wanted to set like this :
ISP A = eth1
ISP B = eth2
ISP C = eth3
LAN-FOR-SALES = eth4
where ISP A + B + C = load balancing and SALES switch will connected to eth4 and use the load balancing network.

ISP D = eth5
ISP E = eth6
LAN-FOR-SUPPORT = eth7
where ISP D + E = load balancing and SUPPORT switch will connected to eth7 and use the load balancing network.

Can one mikrotik router support these setup?

Yes.