Question

suma a doua numere este 1 677 iar diferenta lor este 71. Afla numerele!

Answer 1

$a+b=1677 \\ a-b=71 \ \to a=71+b \\ ****************\\ 71+b+b=1677\\71+2b=1677\\2b=1677-71\\2b=1606\\b=803 \\ \\ a+803=1677\\a=874$

Answer 2

a+b=1677
a-b=71
a=b+71
b+71+b=1677
2b=1677-71
2b=1606
b=1606:2
b=803
a=803+71
a=874