Question

10x + 2y = 20 if 5x - y = 0 value of 'y' is

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Answer 1

Answer:

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Answer 2

Answer:

10x+2y=20....1

5x-y=0....2

Multiplying equation 2 by 2,we get

10x-2y=0....3

Adding equation 1 and 3

10x+2y=20

+ 10x-2y=0

______________

20x=20

x=20/20

x=1

Substitute value of x=1 in equation 2

5(1)-y=0

5-y=0

-y=0-5

y=5

Solution is (x,y)=(1,5)