rojas082204 rojas082204

11-12-2019
Mathematics

contestada

Solving Systems by Elimination
Directions: Solve each system using elimination.
Solution
1. -5x + 4y = -2
2x - 7y=17
Solution: (-2,-3)

Respuesta :

Yang100 Yang100

13-12-2019

Answer:

x=-2, y=-3. (-2, -3).

Step-by-step explanation:

-5x+4y=-2

2x-7y=17

-------------------

2(-5x+4y)=2(-2)

5(2x-7y)=5(17)

---------------------

-10x+8y=-4

10x-35y=85

-------------------

-27y=81

y=81/-27

y=-3

2x-7(-3)=17

2x+21=17

2x=17-21

2x=-4

x=-4/2

x=-2

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