Решите уравнения:

а) -3х-1=0

б)2х+7=5

в)3х-х+5х=2,1

г)х+1,2х-3,6х=-7

д)3у-11=1-2у

е)2(у+2)=-3(у-1)

ж)4(х-5)-(7х+9)=1

з)2х-3(4-х)=5-(х-1)

С обяснением.

Спасибо!

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