Question

solve :5x+2y+ 13 =0 ; 7x- 5y+ 26 =0​

Answer 1

Answer:

Step-by-step explanation:

5X + 2Y = 13 ------(1)

7X - 5Y = 26 --------(2)

From equation (1) we get,

5X + 2Y = 13  

5X = 13-2Y

X = (13-2Y/5) -----(3)

Putting the value of X in equation (3) we get,

7X - 5Y = 26

7 × (13-2Y/5) - 5Y = 26

91 - 14Y/5 - 5Y = 26

91 - 14Y - 25Y/5 = 26

-39Y +91 = 5 × 26

-39Y +91 = 130

-39Y = 130-91

-39Y = 39

Y = 39/-39  

Y = -1  

Putting the value of X in equation (3)

X = 13-2Y/5 => 13 - 2 × -1/5

X = 13+2/5= 15/5

X = 3.

Hence,

x = 3 and Y = -1