Решите уравнение: а) 5х+31-14х=3х-42-7х+34;
б) 12+8х=2х-10-7х+48;
в) 5(х+1)+6(х+2)=9(х+3);
г) 4(5у+2)-7(1-2у)+5(8-у)=128;
д) 3(2z+1)-5(12z-7)+7(6z-1)=23;
е) 0,36х-3,4=0,3(0,4х-1,2).
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