HELP MEEE WITH THE TRY IT QUESTION

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit

Solve the formula ax+ by = c for x.