Question

Equation.
36 x -16y = 8000
21x - 9y = 6000​

Answer 1

Step-by-step explanation:

36x - 16y = 8000

=> 4 ( 9x - 4y ) = 8000

=> 9x - 4y = 2000_________ equation i

21x - 9y = 6000

=> 3 ( 7x - 3y ) = 6000

=> 7x - 3y = 2000 _________ equation ii

By elimination method :-

For eliminating y, eq i × 3 - eq ii × 4,

27x - 12y = 6000

- -28x + 12y = -8000[as signs get changed]

- x = - 2000

=> x = 2000

Putting x = 2000 in eq i,

9x - 4y = 2000

=> (9 × 2000) - 4y = 2000

=> - 4y = 2000 - 18000

=> - 4y = - 16000

=> y = 4000.

Therefore, x = 2000 and y = 4000...

HOPE THIS ANSWER WILL HELP YOU AND PLEASE MARK THIS ANSWER THE BRAINLIEST ONE....

Answer 2

Answer:

by putting the value of x in above equation we will get the value of y.

hope it helps.