Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).

Question

x - 2y = 0
4x - 3y = 15
 

Answer 1

Given equations are x - 2y = 0 -> (1)  and 4x - 3y = 15   -> (2)

                            => x = 2y

Substitute x = 2y in (2) we get,

                 4x - 3y = 15

            => 4(2y) - 3y = 15

            => 8y - 3y = 15

            => 5y = 15

            => y = 15/5

                    = 3

Substitute y value in (1) we get,

               x - 2y = 0

           => x - 2(3) = 0

           => x = 6

Therefore the answer is (6, 3)