Question 385206
{{{(s+25)/2-100*10=5 }}}

{{{(s+25)/2-1000=5}}}   Multiply 100 times 10

{{{(s+25)/2 = 1005}}}  Add 1000 to both sides

{{{(s+25) = 2010}}}    Multiply both sides by 2

{{{ s = 1985}}}   Subtract 25 from both sides