Question

if m < ABF = 7b-24 and m < ABE = 2b, find m < EBF?

Answer 1

m∠ABE + m∠EBF = m∠ABF          Angle addition postulate

  2b      +  m∠EBF = 7b - 24          Substitution

                 m∠EBF = 5b - 24         Subtraction property of equality

Answer: 5b - 24