A] 801-a=1667
-a=1667-801
-a=866
a=-866
б] x+315=411
x=411-315
х=96
в] 932=a+558
-a=558-932
-a=-374
a=374
A] 801-a=1667
-a=1667-801
-a=866
a=-866
б] x+315=411
x=411-315
х=96
в] 932=a+558
-a=558-932
-a=-374
a=374