Răspuns :
a+b+c=274
b:a=5r7=>b=5a+7
c:b=2r13=>c=2b+13=>c=2(5a+7)+13=>c=10a+27
a+5a+7+10a+27=274
16a=274-34=>a=240:16=>a=15
b=5x15+7=82
c=10x15+27=177
b:a=5r7=>b=5a+7
c:b=2r13=>c=2b+13=>c=2(5a+7)+13=>c=10a+27
a+5a+7+10a+27=274
16a=274-34=>a=240:16=>a=15
b=5x15+7=82
c=10x15+27=177
a+b+c=274
b:a=5, rest 7
c:b=2, rest 13
b=5a +7
c=2b+13
c=2•(5a+7)+13 = 10a+14+13 =10a+27
a+5a+7+10a+27=274
16a+34=274
16a=274-34
16a=240. | :16
a=15
b=15•5+7=75+7=82
c=2•82+13=164+13=177
b:a=5, rest 7
c:b=2, rest 13
b=5a +7
c=2b+13
c=2•(5a+7)+13 = 10a+14+13 =10a+27
a+5a+7+10a+27=274
16a+34=274
16a=274-34
16a=240. | :16
a=15
b=15•5+7=75+7=82
c=2•82+13=164+13=177