Question

Which of the following pair is solution of linear equation x + y = 10? / खालीलपैकी कोणती जोडी x + y = 10 या रेषीय समीकरणाची उकल आहे? *​

Answer 1

Answer:

Let x+y1=u&x−y1=v

then 

(10u+2v=4)3

(15u−5v=−2)2

10u+2=4

u=51

−(30u−10v=−4)

__________________

      16v=16

__________________

v=1;u=51=0.2

x+y1=51;x+y=5

x−y1=1;x−y=1

x+y=5

x−y=1

_________

   2x=6

_________

x=3&y=2