The two equations given in the question are - 2x + y = 10 y = 2x + 10 And 4x - y = - 14 Now let us put the value of "y" from the first equation in the second equation. We get, 4x - y = - 14 4x - (2x + 10) = - 14 4x - 2x - 10 = - 14 2x - 10 = - 14 2x = - 14 + 10 2x = - 4 x = - (4/2) = - 2 Putting the value of x in the second equation, we get 4x - y = - 14 4 * (- 2) - y = - 14 - 8 - y = - 14 Multiplying both sides by -1 we get 8 + y = 14 y = 14 - 8 = 6 So the value of x is -2 and the value of y is 6.
