5c-4-2c+1=8c+2

Hallo anonymous!

 

5c - 4 - 2c + 1 = 8c + 2                      both sides : - 8c + 4 - 1

 

5c - 2c - 8c = 2 + 4 - 1

- 5c = 5                                              both sides :  / ( - 5 )

 

c = - 1

 

:- )