Answer to Question #15246 in Algebra for dana
Steve wrote a x 1 = a. He said that the equation is true of any value of a. Do you agree with Steve? Tell why or why not.
Is it a reasonable solution or not? 85 / 5= r; r =7
Steve is right. Any real value of a satisfy this equation. Let's derive this equation by a:
& (a x 1) / a = a / a
& 1 = 1
We've got identity.
Is it a reasonable solution or not? 85 / 5= r; r = 7.
No, the reasonable solution is r = 17.