Verified answer

Bonjour,

5x=2x+9  <=>  5x-2x=9

                <=>  3x=9

                 <=>  x=9/3   

                 <=>   x=3

-3x=5x-16  <=>  16=5x+3x

                   <=>  16=8x

                    <=> x=16/8

                    <=> x=2

3x-4=2x  <=>  3x-2x=4

                <=>  x=4

3-2x=4x  <=>  3=4x+2x

                <=> 3=6x

                 <=> x=3/6

                  <=> x=1/2

5x=2x+9 

5x-2x=9

3x=9

x=9/3   

x=3

-3x=5x-16  

16=5x+3x                

16=8x

 x=16/8

 x=2

3x-4=2x 

3x-2x=4

  x=4

3-2x=4x  

3=4x+2x

 3=6x

 x=3/6

 x=1/2