Solve the simultaneous equations using an algebraic method:
2x+5y=0
3x-4y=23

 The required solution is (x, y) = (5, -2).

Step-by-step explanation:  We are given to solve the following system of equations :

From equation (i), we have

Substituting the value of x from equation (iii) in equation (ii), we get

From equation (iii), we get

Thus, the required solution is (x, y) = (5, -2).