Mohon bantuannya ya...

1. -10x-2x+3
=-12x+3
2. 7a-5b+10a+15b
=7a+10a-5b+15b
=17a+10b
3. 16q-5t+6q+8t
=16q+6q-5t+8t
=22q+3t
4.xy-3xy+6y-8y+3
= -4xy-2y+3
5.(5p-7q+5)-(3p+8q-10)
=5p-3p-7q+8q+5-10
=2p+1q-5


semoga bermanfaat