Respuesta :

Answer:

[tex] - (7 - 2x) + 7 = - 7 \\ = > - 7 + 2x + 7 = - 7 \\ = > 2x = - 7 \\ = > x = \frac{ - 7}{2} [/tex]

Answer:

a minus sign in front of ( ) mean to change + to - and - to +

So it is like this

-7+2x+7=2x=-7

x=-7/2

i hope iwas help ful

Q&A Education