Răspuns :
b:2+24+b=435⇔b:2+b=435-24⇒1,5 b=411⇒b=411:1,5⇒b=274
a=435-274⇒a=161
a=435-274⇒a=161
a+b=435 a=b:2+24 b:2+24+b=435 2b:2+24=435 2b:2=435-24 2b:2=411 2b=411x2 2b=822 b=822:2 b=411 a+411=435 a=435-411 a=24 verific 24+411=435