Răspuns :
762-x=438
x=762-438=324
x- (286-48)=286
x=286+238=524
a+b+c=781
b+c=545
b=a-49
a+545=781
a=781-545=236
b=236-49=187
236+187+c=781
c=358
x=762-438=324
x- (286-48)=286
x=286+238=524
a+b+c=781
b+c=545
b=a-49
a+545=781
a=781-545=236
b=236-49=187
236+187+c=781
c=358
ex1
762-a=438
a=762-438
a=324
ex2
286-48=238(scazatorul)
a-238=286
a=238+286
a=524
ver=524-238=286
ex3
a+b+c=781
b+c=545
a=781-545
a=236
b=236-49
b=187
c=781-236-187
c=358
ver=358+236+187=781
762-a=438
a=762-438
a=324
ex2
286-48=238(scazatorul)
a-238=286
a=238+286
a=524
ver=524-238=286
ex3
a+b+c=781
b+c=545
a=781-545
a=236
b=236-49
b=187
c=781-236-187
c=358
ver=358+236+187=781