Tolong bantu y bsk mau di kumpulin thxs

1.5x-3-4x+5=(5x-4x)-(3-5)=x+2

2.-4y²+8-y²-2= -(4y²+y²)+(8-2)= -5y²+6

3.-3+2p-5p-1=(2p-5p)-(3+1)=-3p-4

4.n-n²-1-3n=-n²+(n-3n)-1= -n²-2n-1

5.4m²-2m²-3-m+5=(4m²-2m²)-m-(3-5)=2m²-m+2

6.a²-a+a²-3a+1=(a²+a²)-(a+3a)+1=2a²-4a+1