SOLUTION: 9=7z-13z-21

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: 9=7z-13z-21      Log On


   

Question 647589: 9=7z-13z-21
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
9 = 7z - 13z - 21
...
Combine like terms
9 = -5z - 21
...
Isolate z on one side
-5z = -21 - 9
-5z = -30
...
Divide both sides by -5
highlight_green%28z+=+6%29
.....................
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com
Wanting for others what we want for ourselves.