Question 1097235
"a number", n
{{{abs(2n-(-1))}}}, difference between twice the number and negative 1.


{{{abs(2n+1)>=10}}}, the description as an inequality.


{{{2n+1>=10}}}
{{{2n>=9}}}
{{{n>=9/2}}}
OR
{{{2n+1<=-10}}}
{{{2n<=-11}}}
{{{n<=-11/2}}}



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{{{system(EITHER,n<=-11/2,OR,n>=9/2)}}}
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