Question 17 Solve and check. Label the equation if it is an identity or a contradiction.
a+(a-3)=(a+4)-(a+1)
Select the correct choice below and, if necessary, fill in the answer box to complete y A. The solution is
a=
◻
(Type an integer or a simplified fraction ) B. The solution is all real numbers. The equation is an identity. C. There is no solution. The equation is a contradiction.