Question

¿Cuál es la solución al siguiente sistema de ecuaciones? 2x-y=-7 3x+5y =9

Answer 1

3x + 5y = 9 [equation - 1] , 5x + 3y = 7 [equation - 2]

Now, 3x + 5y = 9

5y = 9 - 3x

y = (9 - 3x)/5 (Putting this in equation - 2)

5x + 3y =7

5x + 3[(9 - 3x)/5] = 7