Решите уравнение:
а)3(-2х+1)-2(x+13)=7x-4(1-x),
б)-4(5-2а)+3(а-4)=6(2-а)-5а
в)3у(4у-1)-2у(6у-5)=9у-8(3+у)
г)15х+6х(2-3х)=9х(5-2х)-36.
                                              Заранее спасибо!!!
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