Answer:
x=9
Step-by-step explanation:
simplify both sides of the equation
7x+ (-72+1)= -8
7x+-71= -8
7x-71= -8
add 71 to both sides
71+71= 0
-8+71=63
7x/ 7
63/7
x= 9
7X^2
.
is the correct answer
x=-(7 )
