Question

5. समीकरणों 2x + 3y = 18 तथा x-2y= 2 का हल है
(a).X=4,y=2
(b).X=0,y=5
(c).X=6,y=2
(d).X=3,y=4

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Answer 1

Answer:

option (c) x=6,y=3

is the correct answer for above question

Answer 2

Answer:

(c).X=6,y=2

Step-by-step explanation:

$2x + 3y = 18 \: \: (1) \times 2 \\ x - 2y = 2 \: \: (2) \times 3\\ 4x + 6y = 36\\ 3x - 6y = 6 \\ - - - - - - - - - - - \\ \: \: \: 7x = 42 \\ x = 6 \\ - - - - - - - - - - - \\ 6 - 2y = 2 \\ - 2 y= 2 - 6 \\ - 2y = - 4 \\ y = 2 \\ \\ x = 6 \\ y = 2$

add the two equations,

put the value of x into the second (or first) equation,

Hope it will help,