Question

10x+2y=4 , 50x-5y =-2 by elimnation method​

Answer 1

10x + 2y = 4 -------(eqn1)

50x - 5y = -2 -------(eqn2)

Multiplying eqn(1) by 5 and eqn(2) by 2 and adding them :-

50x + 10y = 20

100x - 10y = -4

150x = 16

x = 16/150 = 8/75

Putting value of x, in eqn(1) :-

50 x 8 + 10y = 20

75

16 + 10y = 20

3

10y = 20 - 16

3

10y = 60 - 16

3

10y = 44

3

y = 44

3 x 10

y = 22

15

Therefore, x = 8 and y = 22

75 15