Question

1-3(8x-4)=1 1605+4(3-x)=2011

Answer 1

$\displaystyle a).1-3(8x-4)=1 \\ 1-24x+12=1 \\ -24x=1-1-12 \\ -24x=-12 \\ x= \frac{12}{24} \Rightarrow x= \frac{1}{2} \\ b).1605+4(3-x)=2011 \\ 1605+12-4x=2011 \\ -4x=2011-1605-12 \\ -4x=394 \\ x=- \frac{394}{4} \Rightarrow x=- \frac{197}{2}$