Question

If 13x+17y=43 and 17x+13y=47 then x+y=___________ *
2 points

Answer 1

Answer:

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Answer 2

Given.

• 13x + 17y = 43 .....(1)
• 17x + 13y = 47 .....(2)

To find. Value of x + y = ?

Solution.

• Given, 13x + 17y = 43 .....(1)
• 17x + 13y = 47 .....(2)

• In order to find x + y, we add (1) and (2) no. equations. Thus we get -
• 13x + 17y + 17x + 13y = 43 + 47
• or, 13x + 17x + 17y + 13y = 43 + 47
• or, 30x + 30y = 90
• or, 30 (x + y) = 90
• or, x + y = 90 / 30
• or, x + y = 3

Answer. Value of (x + y) is 3.