{х/5-2/3 <2/5-х/3, 2/7+х/3>х/7-2/3

Question

{х/5-2/3 <2/5-х/3, 2/7+х/3>х/7-2/3

Answer 1

1) х/5-2/5<2/3-х/3;<br>(х-2)/5<(2-х)/3; |*15;<br>3(х-2)<5(2-х);<br>3х-6<10-5х; 3х+5х<6+10;<br>8х<16; х<2;<br>2) х/3+2/3>х/7-2/7;
(х+2)/3>(х-2)/7; |*21;
7(х+2)>3(х-2); 7х+14>3х-6;
7х-3х>-14-6; 4х>-20;
х>-20:4; х>-5.