Mohon bantuannya kak :( Diketahui f(2x-3)=4x-7 , maka nilai dari f(17)-f(7) adalah

[tex]f(2x-3)=4x-7 \\ f(2x)=4(x+3)-7 \\ f(x)=4(\frac{x+3}{2})-7 \\ f(x)=2(x+3)-7 \\ f(x)=2x+6-7 \\ f(x)=2x-1 \\ \\ f(17)-f(7) = 2(17)-1-(2(7)-1) \\ f(17)-f(7) = 34-1-(14-1) \\ f(17)-f(7) = 33-13 \\ f(17)-f(7) = 20[/tex]

f(2x-3)= 4x -7
f(x)=4(2x-3) - 7
f(x)= 8x-12-7
f(x)= 8x - 19
f(17) = 8(17) - 19
f(17) = 117
f(7)= 8(7) - 19
f(7)= 37
maka f(17) - f(7) = 117 - 37 = 80
:)