Question 638361

let's a number be {{{x}}}
given:

the difference of a number and {{{7}}} is {{{39}}} less the number:

{{{(7-x)+39=x}}}

{{{7-x+39=x}}}

{{{7+39=x+x}}}

{{{46=2x}}}

{{{46/2=x}}}

{{{23=x}}}