Question 811717

{{{ -4<=2 + 10 <= 4}}}.......you probably have an {{{x}}} here, I guess, this is what you have {{{ -4<=2x + 10 <= 4}}}

{{{ -4-10<=2x + 10-10 <= 4-10}}}

{{{ -14<=2x   <=-6}}}

{{{ -14/2<=2x /2  <=-6/2}}}

{{{ -7<=x   <=-3}}}