Question

Determine the best method to solve the system of equations. Then solve the system.
-4x+5y-9
4x-5y=-7

a. elimination using subtraction;
b. elimination using addition; no solution
c. substitution
d. elimination using addition;

Answer 1

elimination using addition; no solution

if you use elimination:
-4x+5y-9
4x-5y=-7
-----------
0x + 0y = 2

therefore, no solution

Answer 2

thank you for your help :P

Answer 3

np :)