Question

Решите уравнение: -3≤1-2x≤4

Answer 1

$-3 leq 1-2x leq 4\-4 leq -2x leq 3\-1.5 leq x leq 2$
$x$∈$[-1.5;2]$

Answer 2

$-3 leq 1-2xleq 4\\-3-1 leq -2x leq 4-1\\-4 leq -2x leq 3; |:(-2)\\-frac{3}{2} leq x leq 2\\-1,5 leq x leq 2$