SOLUTION: Solve for x 2x-1=20-x

Algebra ->  Test -> SOLUTION: Solve for x 2x-1=20-x      Log On


   

Question 23829: Solve for x
2x-1=20-x
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
2x-1=20-x
First add 1 to both sides;
2x-1+1=20-x+1
2x=21-x
Now add x to both sides;
2x+x=21-x+x
3x=21
Now divide each side by 3;
3x%2F3=21%2F3
x=7
Hope you understand
=)