Question

solve the following pair of linear equations by elimination method 7x - 8y - 11 = 0 ; 8x - 7y - 7 = 0​

Answer 1

Answer:

Y = -51/20

Step-by-step explanation:

Steps:

Given,

Simultaneous Equation:

7x-8y=11         8x-7y=7

Multiplying 1 and 2 by 7 and 8, we get,

49x-56y=77    -64x+56y= -56

On subtracting we get,

- 15x= 21

x= 21/ -15

x= - 7/5

7* -7/5 - 8y =11

-49/5 - 8y=11

-8y = 104/5

y= -51/20