Question 1013792
{{{x}}}= the number on your card
When you multiply the number on your card by {{{7}}} , you get {{{7x}}} .
The sum of your number and {{{40}}} is {{{40+x}}} .
When you add the sum of your number and 40 to the product you found before, you get
{{{7x+(70+x)=7x+40+x=8x+40=8(x+5)}}} .
When you divide by the sum of your number and 5,
you are dividing {{{8(x+5)}}} by {{{x+5}}} ,
and you get
{{{8(x+5)/(x+5)=highlight(8)}}} .