SOLUTION: Solve for z. Show ALL work: 7z - 18 = -2z + 18

Algebra ->  Equations -> SOLUTION: Solve for z. Show ALL work: 7z - 18 = -2z + 18       Log On


   

Question 693434: Solve for z. Show ALL work: 7z - 18 = -2z + 18
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
7z-18=-2z%2B18 Start with the given equation.


7z=-2z%2B18%2B18 Add 18 to both sides.


7z%2B2z=18%2B18 Add 2z to both sides.


9z=18%2B18 Combine like terms on the left side.


9z=36 Combine like terms on the right side.


z=%2836%29%2F%289%29 Divide both sides by 9 to isolate z.


z=4 Reduce.


----------------------------------------------------------------------

Answer:

So the solution is z=4