Question

11x+5y=25and5x+11y=7then x+y=____(1, 2,3,5)

Answer 1

Answer:

answer is 3

Step-by-step explanation:

Answer 2

Answer:

Given,

11x + 5y = 25 - (i)

5x + 11y = 7 - (ii)

Now,

(i) + (ii) => 11x + 5y + 5x + 11y = 25+7

=> 11(x+y) + 5(x+y) = 32

=> ( 11 + 5 ) × ( x + y ) = 32

=> 16(x+y) = 32

=> x+y = 32/16

=> x+y = 2

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