Math, asked by dhobletanish939, 21 days ago

if 5x+4y=13 and 4x+5y=14 then x-y=

Answers

Answered by bendimohini6

5

Answer:

x - y = -1

Step-by-step explanation:

5x + 4y = 13 ------- ( 1 )

4x + 5y = 14 ------- ( 2 )

( 1 ) × 5 ; ( 2 ) × 4

25x + 20y = 65

16x + 20y = 56

------------------------

9x = 9

x = 9 / 9

= 1

Substitute x value in Equation (1) :

5x + 4y = 13

5 ( 1 ) + 4y = 13

5 + 4y = 13

4y = 13 - 5

y = 8 / 4

y = 2

x - y

1 - 2

= -1

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