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If 3x+8=3x+8 is it one solution or no solution

Find the nonpermissible replacement for binthis expression. b2/5b +5

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.