Question 115861
{{{-8<=2x-10<=10}}}............add {{{10}}} to all three terms

{{{-8+10<=2x-10+10<=10+10}}}

{{{2<=2x<=20}}}............divide all three terms by {{{2}}}

{{{1<=x<=10}}}....so,

inequality is true for every {{{x}}} from the set : [1,2,3,4,5,6,7,8,9,10]


check:

{{{-8<=2*1-10<=10}}}............

{{{-8<=-8<=10}}}............true

{{{-8<=2*2-10<=10}}}............

{{{-8<=-6<=10}}}............true

{{{-8<=2*3-10<=10}}}............

{{{-8<=-4<=10}}}............true
:
:
:
{{{-8<=2*10-10<=10}}}............

{{{-8<=20-10<=10}}}............

{{{-8<=10<=10}}}............true