melisaaa1 melisaaa1

14-12-2020
Mathematics

contestada

Enter the x coordinate of the solution to this system of equations.
- 2x + y = 5
– 5x + y = – 4

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jimrgrant1 jimrgrant1

14-12-2020

Answer:

x = 3

Step-by-step explanation:

Given the 2 equations

- 2x + y = 5 → (1)

- 5x + y = - 4 → (2)

Multiply (2) by - 1 then add to (1) to eliminate y

5x - y = 4 → (3)

Add (1) and (3) term by term to eliminate y

3x = 9 ( divide both sides by 3 )

x = 3

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