Question

Решите : 1) |x|< 12 2) |x-5|< 1 3) |x+4|< 7 4) |x|> 13 5) |x-2|> 3 6) |x+3|> 5

Answer 1

1) -12<х<12;
2) -1<х-5<1; -1+5<х<1+5; 4<х<6;
3) -7<х+4<7; -7-4<х<7-4; -11<х<3;
4) -13>х>13;
5) -3>х-2>3; -3+2>х>3+2; -1>х>5;
6) -5>х+3>5; -5-3>х>5-3; -8>х>2.