Question 356257
Break it up. 
Solve each side separately.
Then put the solutions together.
{{{-6<7X+1<15}}}
{{{-6<7X+1}}} and {{{7X+1<15}}}
{{{-7<7X}}} and {{{7X<14}}}
{{{-1<X}}} and {{{X<2}}}
{{{-1<X<2}}}