Question

numarul natural abcd -bara de asupra- care verifica relatia :
3abcd -bara deasupra- + abcd3 - bara deasupra- = 43016

Answer 1

$\it \overline{3abcd}+\overline{abcd3}=43016 \Rightarrow 3\cdot10000+\overline{abcd}+\overline{abcd}\cdot10+3=43016 \Rightarrow\\ \\ \\ \Rightarrow 30003+11\cdot\overline{abcd}=43016|_{-43016} \Rightarrow 11\cdot\overline{abcd}=13013|_{:11} \Rightarrow \overline{abcd}=1183$