Question

substitution method 5x+2y+13=0, 7x-5y+26=0

Answer 1

Answer:

x = -3, y = 1

Step-by-step explanation:

The given equations are 5x+2y+13=0 and 7x-5y+26=0.

Using substitution method;

From the second equation,

7x-5y+26=0

7x+26=5y

y=(7x+26)/5

Substituting this y in the 1st equation;

5x+2*(7x+26)/5 +13 =0

(25x+14x+52+65)/5 = 0

39x+117 = 0

39x = -117

x = -3

Substituting this in the 1st equation;

5(-3)+2y+13=0

-15+2y+13=0

-2+2y=0

2y =2

y=1