Răspuns :
63-a=35
a=63-35
a=28
b+30=64
b=64-30
b=34
91-(c+27)=48
c+27=91-48
c+27=43
c=43-27
c=16
d-56=36
d=56+36
d=92
a=63-35
a=28
b+30=64
b=64-30
b=34
91-(c+27)=48
c+27=91-48
c+27=43
c=43-27
c=16
d-56=36
d=56+36
d=92
Răspuns:
63-a=35
a=63-35
a=28
b+30=64
b=64-30
b=34
91-(c+27)=48
c+27=91-48
c+27=43
c=43-27
c=16
d-56=36
d=56+36
d=92