3a-5+7>2a-1+7 = 3a+2>2a+6
3a-5+4a>2a-1+4a = 7a-5>6a-1
3a-5-3>2a-1-3 = 3a-8>2a-4
3a-5-2a>2a-1-2a = a-5>-1
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(3,2m-2,4)5<(5,6m-1,6)5 =16m-12<28m-8<br>
1\2=0,5
(3,2m-2,4)0,5<(5,6m-1,6)0,5 =1,6m-1,2<2,8m-0,8<br>
1\4=0,25
(3,2m-2,4)0,25<(5,6m-1,6) 0,25=0,8m-0,6<1,4m-0,4<br>