Решите пожалуйста уравнения: 1) 3(2х+8)-(5х+2)=0
2) 8(3-2х)+5(3х+5)=9
3) 0,6(х+7)-0,5(х-3)=6,8
4) 0,3(х-2)-0,2(х+4)=0.6
Заранее спасибо!
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