SOLUTION: Given 5(x-8)=-25 Prove x=3

Algebra.Com
Question 1038092: Given 5(x-8)=-25
Prove x=3

Answer by tutor_paul(519)   (Show Source): You can put this solution on YOUR website!
To prove that x=3, there are a couple of ways to do it.
The way shown below solves the equation for x. But you could also
substitute 3 for x in the equation and see if the equality holds
true. But I like this method better:

Distribute the multiplication by 5 on the left side of the equation:

Add 40 to both sides of the equation:

Divide each side of the equation by 5 to solve for x:

===============
Good Luck,
tutor_paul@yahoo.com

RELATED QUESTIONS

Prove that given: {{{matrix(1,3,(5x-1)/8,""="",3)}}} then... (answered by Edwin McCravy,MathLover1)
given: 5(2x-3)+3=18 prove: x=3 (answered by stanbon,MathLover1)
Given: 3/4x-9=2x+5 Prove:... (answered by rfer)
Given: 3x+5/2 (over two) Prove:... (answered by richard1234)
Prove that if 3x-2=x-8 Given: 3x-2=x-8... (answered by drk)
given 3x+7=x-5 prove... (answered by addingup)
Solve for x and y, given: 25^x = 125 * 5^y (4^x) * (8^-y)=1 (answered by ikleyn)
Write a two column proof Given:2/3(x-6)=8 Prove: x=... (answered by LinnW)
Given: 5=2-1/2x Prove: x=... (answered by fractalier)