Marco C.

2/3/02

P1 Math

 

 

Math computer problem #1

3x-5=5x-9

First I look at the problem 3x-5. Then I add nine to each side because I need to narrow each side of the problem to just x and a single number. Then I get 4+3x=5x. This is an example of the property of equality. Then I subtract 3x from both sides and get 4= 2x. Then lastly I divide 4 and 2x by 2. My answer is then 2.

                                       

 

 

3x-5 = 5x-9

+9        +9

3x+4 = 5x

-3x      -3x

4          2x

2          2

 

X= 2

 

 

(Always make sure to check too)

3*2-5 = 5*2-9

1=1