Question

$4x + 5y = 25000.5x + 4y = 13000$
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Answer 1

heya...,

4x+5y=25000.....(1).×4

5x+4y=13000.....(2).×5

16x + 20y = 100000

25x + 20y = 65000

-. -. -

-9x. = -135000

x= 15000.

put x=15000 in eqn (1).

4x + 5y = 25000

4×15000 + 5y = 25000

60000 + 5y = 25000

5y = 25000 - 60000

5y = 35000

y = 35000/5

y = 7000.

hope it's helpful to you.