Question

a:b=5rest 19 ,a=16251 +b sa se afle nr

Answer 1

a/b= 5r19
a=16251+ b
b*5+19=a
5b+ 19= 16251+b
4b= 16251-19=16232
b= 16232/4 = 4058
a = 20309

Answer 2

$a:b=5r19 \\ a=5b+19 \\ a=16251+b \\ 16251+b=5b+19 \\ 16251-19=5b-b \\ 4b=16232 \\ b=4058 \\ a=16251+4058=20309$