Răspuns:
-13,3,7
Explicație pas cu pas:
5(x-2)-2x-(6+7x)=3(-x-1) <=>
<=> 5x-10-2x-6-7x=-3x-3 <=>
<=> -4x-16=-3x-3 <=>
<=> -x=13 => x=-13
3(x+2)-(4x+1)=2(4-x) <=>
<=> 3x+6-4x-1=8-2x <=>
<=> -x+5=8-2x <=>
<=> x=3
7(x+3)-3x=5+6(x+5)-4x <=>
<=> 7x+21-3x=5+6x+30-4x <=>
<=> 4x+21=2x+35 <=>
<=> 2x=14 => x=7