Răspunsuri

2014-07-18T11:57:57+03:00
A+b=97
a:b=4 rest 7
a=4b+7

4b+7+b=97
5b+7=97
5b=97-7
5b=90
b=90:5
b=18

a=4*18+7= 72+7=79