Respuesta :
Answer:
x=0
Step-by-step explanation:
9x-7=-7
Add 7 to each side
9x-7+7=-7+7
9x = 0
Divide each side by 9
9x/9 = 0/9
x = 0
9x - 7 = -7
(Add 7 to the other side)
9x = -7 + 7
9x = 0
=> x = 0
(You can substitute x back to check for the answer)
9(0) - 7 = -7
0 - 7 = -7
(Add 7 to the other side)
9x = -7 + 7
9x = 0
=> x = 0
(You can substitute x back to check for the answer)
9(0) - 7 = -7
0 - 7 = -7