Question

4/x+10/y=2,3/x+2/y=19/20 by elimination method, quadratic equation

Answer 1

Explanation:

4/x + 10/y=2.......[1]

3/x+2/y=19/20........(2)

multiple (2) term by 5,

3/x + 2/y= 19/20

3/x*5+2/y*5=19/20*5

15/x+10/y=19/4...... .(3)

subtract (3) term from (1),

4/x+10/y =2

-

15/x+10/y =19/4

- - -

______________

-11/x = -11/4

-11*4/x = -11

-44/x = -11

-44 = -11*x

-44/-11 = x

x = 4

put x = 4 in the epuation (1),

4/x+10/y =2

4/4+10/y = 2

1+10/y =2

10/y = 2-1

10/y = 1

10 = 1*y

y = 10

therefore , x = 4 and y= 10.

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Answer 2

Answer:

Hope my answer helps u.....