7(5х+8)-11х=35х+56-11х=24х+56
33-8(11х-1)-2х=33-88х+8-2х=41-90х
х-(х-(3х-1))=х-х-3х+1=-3х+1
-5а-(8х-5а)=-5а-8х+5а=-8х
(3х-21)-2х-(17-8х)=3х-21-2х-17+8х=9х-38
9а+3(15-9х)=9а+45-27х
-2(0,2х-0,1)+4(0,3-1)=-0,4х+0,2+1,2-4=-0,4х-2,6
13х-(9а-((с-а)-9а))=13х-9а-с+а-9а=
13х-17а-с.
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7(5х+8)-11х=35х+56-11х=24х+56
33-8(11х-1)-2х=33-88х+8-2х=41-90х
х-(х-(3х-1))=х-х-3х+1=-3х+1
-5а-(8х-5а)=-5а-8х+5а=-8х
(3х-21)-2х-(17-8х)=3х-21-2х-17+8х=9х-38
9а+3(15-9х)=9а+45-27х
-2(0,2х-0,1)+4(0,3-1)=-0,4х+0,2+1,2-4=-0,4х-2,6
13х-(9а-((с-а)-9а))=13х-9а-с+а-9а=
13х-17а-с.