Answer all of these with explannation of how you got this answer

–10x – x

4 + 7(x + 3)

5(–2xy)

–k + 3(4k –1) + 2

6(–2y) – 9 + 4(–2y + 6)

6(–2y) – 9 + 4(–2y + 6)

5(b – 4) + 12