. Determining an Unknown in an Equation when Multiplying or Dividing

Question

If the unknown term is in the denominator, don't forget to simply move it across the equal sign to the other side of the equation so that it ends up in the numerator.

Solve the following equations for the value of X . Don't forget to round off appropriately.  

 

 

0.902 = 4.3

------     -----

  X         19.97

 

Answer 1

Good advice. "Move" is not an alebraic operation

 

0.902 / x = 4.3 / 19.97

0.902 = 4.3x / 19.97     multiply both sides by x

18.01294 = 4.3x           multiply both sides by 19.97

4.189055814 = x          divide both sides by 4.3