Răspuns :
a)x-159=267
x=267+159
x=426
b)x+425=638
x=638-425
x=213
c)43+x+323=975
x+366=975
x=975-366
x=609
x=267+159
x=426
b)x+425=638
x=638-425
x=213
c)43+x+323=975
x+366=975
x=975-366
x=609
[tex] x-67-92=267[/tex]
x-159=267
x=267+159
x=426
[tex]542+x-117=638[/tex]
542+x=638+117
542+x=755
x=755-542
x=213
[tex](43+x)+(537-214)=975[/tex]
(43+x)+323=975
43+x=975-323
43+x=652
x=652-43
x=609
x-159=267
x=267+159
x=426
[tex]542+x-117=638[/tex]
542+x=638+117
542+x=755
x=755-542
x=213
[tex](43+x)+(537-214)=975[/tex]
(43+x)+323=975
43+x=975-323
43+x=652
x=652-43
x=609