Question

determinati a si b stiind ca5a+20b=110

Answer 1

5a+20b=110 <=> 5(a+4b)=110 <=> a+4b=110:5 <=> a+4b=22

a=2 => b=(22-2):4 => b=20:4 => b=5;

a=6 => b=(22-6):4 => b=16:4 => b=4;

a=10 => b=(22-10):4 => b=12:4 => b=3;

a=18=> b=(22-18):4 => b=4:4 => b=1;