Which equation, when solved, gives 8 for the value of x?

a. 5/2x +7/2=3/4x+14

b. 5/4x-9=3/2x-12

c. 5/4x-2=3/2x-4

d. 5/2x-7=3/4x+14

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem