Hello from MrBillDoesMath!
Answer:
b. none
Discussion:
The original equation
-7a+7a+6=8 can be rewritten as
(-7a + 7a) + 6 = 8 =>
0 + 6 = 8 =>
6 = 8
As 6 does not equal 8 there are NO (zero) solutions to the equation.
Thank you,
MrB
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