tìm x,y biết

a,\(\left(2^3\right)^{1^{2005}}\cdot x+2005^0\cdot x=9915:3+1^{2025}\)

b,\(2^x+2^{x+1}+2^{x+2}+2^{x+3}=480\)

c,\(2024^{\left|x-1\right|=y^2-1}\cdot3^{2024}=9^{1012}\)