Question

Solve the pair of linear equation by elimination method x-y=3 ,4x+2y=0

Answer 1

Answer:

$(x - y = 3) \times 2 = 2x - 2y = 6$

Again solving:-

2x = 6

$x = 3$

so.

3 - y = 3

y = 0

Answer 2

Answer

Step-by-step explanation:

x-y=3 --------equation 1

4x+2y=0--------eqution 2

so we have tow eqution now,

multiplying in eqution 1 by  2

we get ,

2x-2y=3------from 1 [eqution 3]

so now to eliminate y add eqution 3 or eqution 2,

we get,

[4x+2y=0]+[2x-2y=3]

:6x=3

:x=2

put the value of x in eqution 1

we get,

2-y=3

-y=3-2

-y=1

y=-1

therefore value of x and y in eliminating method is (x,y)=(2,1)