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