Răspuns :
a+b=53
a:b=9rest3
a=9b+3,atunci 9b+3+b=53
10b=53-3
10b=50,b=50:10=5
a=5*9+3=45+3=48
v:48+5=53
a:b=9rest3
a=9b+3,atunci 9b+3+b=53
10b=53-3
10b=50,b=50:10=5
a=5*9+3=45+3=48
v:48+5=53
a+B=53,a\b=9rest3,a=9b+3 atunci9b+3+b=53,10b=53-3,10b=50,b=50\10=5,a=5x9+3=48,verificare48+5=53