Answer
$x\geq-1$
Work Step by Step
Considering the inequality rules:
$-a\geq b = a\leq-b$
and if $a>b$ then $a-c > b-c$
then:
$1-x\leq2$
$=1-1 -x\leq 2-1$
$=-x\leq1$
$=x\geq-1$
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