For each equation determine whether it has no solutions, exactly one solution, or is true

for all values of x (and has infinitely many solutions). If an equation has one solution, solve

to find the value of x that makes the statement true.

a. 6r+8 = 7x + 13

b6r + 8 = 2(3x + 4)

c. 6r+8 = 6r+ 13