Veda solves the following system of linear equations by elimination. What is the value of x of the solution?

Let's solve the system:

6+4x-2y = 0

-3-7y = 10x

Divide first equation by 2:

2x-y=-3

We solve for y:

y = 2x+3

In order to find x we replace y in the second equation:

-3-7 (2x+3) = 10x

-3-14x-21=10x

-24 = 24x

x=-1

Bonus: To find y we simply compute 2x+3 but we replace x with - 1

y = 2 (-1) + 3 = 1