Question

15x+17y = 21; 17x+15y = 11. Find value of x+y? *

Answer 1

Answer:

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Step-by-step explanation:

Let us consider the equations

15X + 17Y = 21……………..(1)

17X + 15Y = 11……………..(2)

Subtracting equation (1) and equation (2)  we get

– 2X + 2Y = 10…………….(3)

Taking 2 as a common factor from equation (3)

– X + Y = 5………………….(4)

Multiplying equation (4) by (-), we get

X – Y = -5

Answer 2

Answer:

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