Question 1000192
{{{100/5=20}}}, WHOLE APPLES.



The word problem you made up and tried to solve used the concept of repeated subtraction.  Not bad, but this is the same as division.  


You were thinking,  what is Q, in {{{100-5*Q=0}}}.  Are you learning basic algebra?
{{{100-5Q=0}}}
{{{5(20-Q)=0}}}
{{{20-Q=0}}}
{{{20-Q+Q=0+Q}}}
{{{highlight(20=Q)}}}