(x-35)-18=17
х-35 = 17+18
x -35 = 35
x = 35+35
x= 70
12+(х+34)=83
12+х+34=83
х=83-12-34
х=37
93-(х+56)=8
93-х-56=8
-х=8+56-93
-х=-29
х=29
(x-35)-18=17
х-35 = 17+18
x -35 = 35
x = 35+35
x= 70
12+(х+34)=83
12+х+34=83
х=83-12-34
х=37
93-(х+56)=8
93-х-56=8
-х=8+56-93
-х=-29
х=29