SOLUTION: I need to solve for x in the equation nx=2nx-21n could you please help me. I have tried this way-- nx=2nx-21n nx=n(2x-21) where do I go from here? Thank you

Question 23497: I need to solve for x in the equation nx=2nx-21n could you please help me. I have tried this way--
nx=2nx-21n
nx=n(2x-21)
where do I go from here?
Thank you

Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
if you need to solve for x, then you need every term with x in it on one side:
nx=2nx-21n
nx-2nx=-21n
x(n-2n)=-21n
x(-n)=-21n
x = (-21n)/(-n)
x = 21

since the - and the - cancel and the n and the n cancel

jon.

RELATED QUESTIONS
please help me with this problem. Solve the equation. 21n^2 + 63n =... (answered by hamda)

i need to factor the polynomails n to the third +4n to the second -... (answered by checkley71)

Hello Tutors, I need some assistance with these expressions. The value for n is 14 and (answered by josgarithmetic)

could you please help me solve for x in this equation: 2x+y=5 x-y=1 could you by any... (answered by Abbey)

i need to factor by grouping. 7m + -2ms + -21n + 6ns (answered by lynnlo)

One solution to the system of equations : y= mx^2 +nx +n and y= nx^2 -mx +n is (-2,11) . (answered by ikleyn,MathLover1)

3n(7n-20)=96 i have gotten to 21n squared -60=96 then im stuck :( please expain... (answered by edjones)

Mr. Jellyby was working with transformations of exponential functions when he believed he (answered by ankor@dixie-net.com,richard1234)

If f(x) = x/sqr(1+x^2), prove by mathematical induction for n>=2 that f(f(...(f (x))...)) (answered by Theo)