5x-2y=7 and 10x-4y=6?

first check the intersection point.
use a graph to solve the system of linear equation.
then check your solution algebraically.
5x-2y=7 equation 1
10x-4y=6 equation 2
the graph gives you a visual model of the solution.
OR
use the substitution method to solve the system of linear equation.

10x - 4y = 14
and
10x - 4y = 6

Something fishy here !

No solution.

Solve by using elimination.

5x - 2y = 7 ...... (1)
10x - 4y = 6 ...... (2)

(1) * 2.
2(5x - 2y) = 2(7)
10x - 4y = 14

(1) * 2 - (2).
....10x - 4y = 14
‒) 10x - 4y = ..6
------------------------------
..............0 = ..8
(no solution)

it is actually not possible