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Home > MC1 > Chapter 10 > Lesson 10.1.2 > Problem 10-25


Find the value of the variable that makes each equation true.

  1. If , then .
    Why does this make sense?

    If , what must be equal to?
    Try setting up a diagram to figure it out.

  2. What do you need to subtract from to get ?
    How can you use this to help figure out the value of ?