Răspuns :
a+b=240
a:b=4 r 5⇒a=4b+5
4b+5+b=240
5b+5=240
5b=240-5
5b=235
b=235:5
b=47
a=47x4+5
a=193
a:b=4 r 5⇒a=4b+5
4b+5+b=240
5b+5=240
5b=240-5
5b=235
b=235:5
b=47
a=47x4+5
a=193