Question

Solve using elimination method
1001x+999y=564
999x+1001y=436

Answer 1

follow kar follow kar

Answer 2

1001x+999y=564 -(1)

999x+1001y=436 -(2)

By (1) + (2)

2000x + 2000y = 1000

x+y=1/2 -(3)

By(1) - (2)

2(x-y) =128

x-y = 64 (4)

By (3) & (4)

2x = 64.5

x = 32.5

put in (4)

32.5 - y = 64

-y = 31.5

y = -31. 5