SOLUTION: if -1/3x+7=16, what is the value of 2x+1? the answer is -53 but how do you get it.

Algebra ->  Expressions-with-variables -> SOLUTION: if -1/3x+7=16, what is the value of 2x+1? the answer is -53 but how do you get it.      Log On


   

Question 193739: if -1/3x+7=16, what is the value of 2x+1? the answer is -53 but how do you get it.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


Given Eqn:
%28-1%2F3%29x%2B7=16
Solve for x.

Combine similar terms:
%28-1%2F3%29x=16-7=9
Cross multiply:
x=%28-3%29%289%29
x=%28-27%29 ---> Subst. to 2x%2B1:

=2%28highlight%28-27%29%29%2B1
=-54%2B1
=red%28-53%29

Thank you,
Jojo