Post a New Question

Algebra

posted by on .

9X+y=2
-4X-y=17

  • Algebra - ,

    use elimination method to solve it.

  • Algebra - ,

    9 x + y = 2
    -4 x- y = 17 Add
    ______________

    9 x + ( - 4x ) + y + ( - y ) = 2 + 17

    9 x - 4 x + y - y = 2 + 17

    5 x + 0 = 19

    5 x = 19 Divide both sides by 5

    x = 19 / 5 = 3.8


    9 x + y = 2

    9 * 19 / 5 + y = 2

    171 / 5 + y = 2

    y = 2 - 171 / 5

    y = 10 / 5 - 171 / 5

    y = - 161 / 5

    y = - 32.2

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question