posted by .

what does it mean when you are solving an equation, and, the variable that you are trying to solve for cancels itself out?

  • math -

    It means that there is no unique value for that variable. It could be anything and the equation would still be valid. Another way of saying this is: "The equation is an identity"

  • math -

    thank you so much that was so helpful i wish i could repay you! since you seem to know what you are doing can you take a look at the more recent question i posted becasue i am getting anxious that nobody else will answer to my comment and im SO stuck on the problems!

  • math -

    I think you are a sweat girl

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    how do you write an equation and state what the variable n represnts. 54 -n- =24 If you're writing an equation where you need to state what the variable is, then you need to end up with an equation where n is the only thing on one …
  2. Algebra

    I don't understand how to do this problems: Solve for the variable r, C=2PIr (PI is the pi symbol thing then r is next to it) and this problem solve for the variable l, S=B+1/2Pl please help :) When you solve for a variable, you want …
  3. math, algebra

    Problem: A formula for a football player's rushing average r with a total of y yards rushed in n carries of the ball is r=y/n. Solve for n. I have no other information this is how its in the book how do i even solve for n if theres …
  4. MATH

    I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is the prob. x+y=5 x-2y=-4 equation 1 x+y=5 equation 2 x-2y=-4 Multiply equation 1 by -1. Add equation 1 to equation 2. The x term cancels. Solve for y. THEN, put …
  5. physics (elastic collision)

    A ball of mass .44 kg and speed of 4.5 m/s collides head-on with a .22 kg ball at rest. Assuming perfect elasticity, what is the speed and direction of each ball afterwards?

    m-2/m-5*m+5/m-2=-1 If your problem is this: (m - 2)/(m - 5) * (m + 5)/(m - 2) = -1 (m - 2) cancels out in both the numerator and denominator on the left-hand side since you are multiplying. That leaves us with this: (m + 5)/(m - 5) …

    Solve each system 3x+2y= -2 9x- y= -6 I know how to solve for x but i get really lost trying to figure out how to solve for the second variable
  8. Math

    Simplify the exponential expression. Assume the variables represent nonzero real numbers. (2^-1 x^-5 y^-5)^-2 (2x^-2 y^4)^-2(4x^-2 y^4)^0 ______________________________________ (2x^-5 y^-5)^2 the line by the way means to divide. i …
  9. algebra solving log equations

    n sqrt(x-8)= 5 I would like help to solve this what i did was to take away the square root i squared both sides coming up with (ln sqrt(x-8))^2= (5)^2 ln(x-8)=25 am i alowed to do this with ln in the equation?
  10. Algebra

    There are 4 problems that I don't understand how to solve so, please help me. A numerical explanation with words explanation would be nice. Thank you tutors. Rewrite each equation so it is in the form ax + b = c or x + d/e = f, where …

More Similar Questions