Answer:
All are in the picture
Step-by-step explanation:
lmk if you'd like me to explain more on any of them :)
\the second and third one
Distributive property: a(b +c) = a*b + a*c
(2x + 1) - 7(-6x + 9) = (2x + 1) + (-7)*(-6x) + (-7)*9
= 2x + 1 + 42x - 63 {Combine like terms}
= 2x + 42x + 1 - 63
= 44x - 62
, and 
, we have
