Ten times a number added to five is nine times the number.

Question

Write an equation for the problem and then solve.

Answer 1

It’s 5+10n=9n

Take away 10n from both sides to isolate the variable

5=-n

Divide both sides by -1

-5=n

Answer 2

Let "n" represent the number.

"Ten times a number" would be "10n" and "ten times a number added to five" would be "10n + 5"

"nine times the number" would be "9n"

So 10n + 5 = 9n

Solve by subtracting "9n" from both sides and then by subtracting 5 from both sides.