Answer:
x = 5 and y = 4
Step-by-step explanation:
In elimination method we solve a system of two variable equations by eliminating one variable by operating the equations.
Given system of equations,
3x + 4y = 31 ------(1)
2x - 4y = -6 --------(2),
Equation (1) + equation (2),
3x + 2x = 31 - 6
5x = 25
x = 5
From equation (1),
3(5) + 4y = 31
15 + 4y = 31
4y = 16
y = 4
Hence, the solution of the given equations is, x = 5, y = 4
