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  1. J

    Evaluating Functions

    I re-wrote the denominator like this: 3y+4/y - 3/1 From here I just cross multiplied: 3y + 4 - 3y Combine like terms and you end up with 4/4. F(3y+4/y) = 1
  2. J

    How do I solve an equation with a variable in the numerator?

    The easiest way is to multiply both sides of the equation by the denominator. The reason why this works is because it doesn't change the equality. (5x+10)/2 = 20 5x+10 = 40 5x = 30 x = 6 Even if the variable was in the denominator, you can still solve for the variable using the same steps...
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