Jose thinks of a number.
He multiplies this number by 9 then subtracts 9.
His answer is 45. What was Jose's original number?
Jose's friend thinks of a number.
He then does the following operations:
Multiply by 2, subtract 3, multiply by 3 then add 21 (in that order). He finds that the number he ends up with is 9 times his original number.
What was Jose's friend's original number?
Change NumbersEasier Questions
Topics: Starter  Algebra  Functions
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=April11 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to the Think Of A Number exercise.
Here is the URL which will you to our eQuation Generator which provides unlimited practice solving linear equations.