-8(t-2)+4=- 8t+16+4=20-8t
-15-2(-4-x)=-15+8+2x=2x-7
-(x+4)+10(t-2)= -x-4+10t-20=9t-24
4(6-a)-7(b+9)=24-4a-7b-63=-4a-7b-39
-8(t-2)+4=- 8t+16+4=20-8t
-15-2(-4-x)=-15+8+2x=2x-7
-(x+4)+10(t-2)= -x-4+10t-20=9t-24
4(6-a)-7(b+9)=24-4a-7b-63=-4a-7b-39