Points of view (changing the subject of an equation)

This post is practicing simple equations. In 3 days there will be another one to change the subject of more simple equations. If you write your answers in the box at the bottom I will check them and reply to you. I won’t publish them on the page though!

  • “I am forty-one years older than you” is my point of view. In algebra language I would write R=C+41
  • What’s your point of view?
  • C=R-41

Looking at some of the people in my family then,

  • R=D+26 (I am 26 years older than D, my oldest daughter)
  • What’s her point of view?
  • D=R-26

Now let’s look at another relationship in my family,

  • R=G+28
  • Who is older? R or G?
  • R is older than G, by 28 years.
  • so how would G see it?
  • G=R-28

Now here’s something you can work out,  given I am 54 at the moment,

  1. How old is C?
  2. How old is D?
  3. How old is G?
  4. One more person in my family is T. R=T (that’s my point of view) How old is T?
  5. What is T’s point of view, in other words write T=…

 

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