Răspuns :
a+b=88;
⇒a-b=b/5
⇒a=b+b/5
⇒a=5b/5+b/5
⇒a=6b/5;
⇒6b/5+b=88
⇒6b/5+5b/5=88
⇒11b/5=88
⇒b=5·88/11
⇒b=5·8
⇒b=40;
⇒a=6·40/5
⇒a=6·8
⇒a=48;
⇒a-b=b/5
⇒a=b+b/5
⇒a=5b/5+b/5
⇒a=6b/5;
⇒6b/5+b=88
⇒6b/5+5b/5=88
⇒11b/5=88
⇒b=5·88/11
⇒b=5·8
⇒b=40;
⇒a=6·40/5
⇒a=6·8
⇒a=48;
a+b=88;
a-b=b/5
a=b+b/5
a=5b/5+b/5
a=6b/5;
6b/5+b=88
6b/5+5b/5=88
11b/5=88
b=5·88/11
b=5·8
b=40;
a=6·40/5
a=6·8
a=48;