Question

Solve 2x-y+5 = 0 and x + 2y = 4 by Elimination method

Answer 1

I have attached this... Hope it will help you

Answer 2

Given:

2x-y+5 = 0 and x + 2y = 4

To find:

A solution of the given equation by the elimination method

Solution:

We have given the equations as:

2x-y+5 = 0 -------------(I)

x + 2y - 4 = 0 ----------------(II)

In the elimination method, we just make the coefficient of any of the variables equal to eliminate it.

Multiply the equation (I) with 2 we get:

4x-2y+10 = 0

then add it to the equation (II)

4x-2y+10 = 0

x + 2y - 4 = 0

5x + 0 +6 = 0

• 5x = -6
• x = -6/5

put this value in any of the equation to get the value of y

x + 2y - 4 = 0

• -6/5 +2y = 4
• 2y = 4+6/5
• 2y = 26/5
• y = 13/5

Henve the solution of 2x-y+5 = 0 and x + 2y = 4 is (-6/5, 13/5)