Respuesta :

[tex]a:b=6 \ rest \ 5 \to \boxed{a=6b+5}\\ a+b=957 \\ ********************* \\ 6b+5+b=957 \\ 7b+5=957 \\ 7b=957-5 =952 \\ 7b=952 /7 \\ b= 136 \\ \\ a+136=957 \\ a=821[/tex]
the answewr is 821 he got it right