Question

Aflatinumerele a,b,c,stiind ca a+b=c,a-b=b,b+c=32

Answer 1

$a+b+a-b=c+b \\ 2a=b+c=\ \textgreater \ 2a=32=\ \textgreater \ a=32:2=\ \textgreater \ a=16 \\ a-b=b=\ \textgreater \ a=b+b=\ \textgreater \ a=2b=\ \textgreater \ 16=2b=\ \textgreater \ b=16:2=8 \\ a+b=c=\ \textgreater \ 16+8=24$