m∥nm∠2=60° given
∠8≅∠2
m∠8=m∠2 angle congruence postulate
m∠8=60° substitution property of equality
m∠7+m∠8=180° linear pair postulate
m∠7+60°=180° substitution property of equality
m∠7=120°

subtraction property of equality
alternate interior angles theorem
division property of equality
alternate exterior angles theroem

brainliest to whoever asks

Complete the two-column proof. given: 5/x + 9 = 11 prove: x = 10 5/x + 9-11 select one: a. a. given b. subtraction property of equality c. division property of equality b. a. given b. subtraction property of equality c multiplication property of equality ca. given b. addition property of equality c. multiplication property of d. a. given b. addition property of equality c. division property of equality