Question

Find the value of Dx and Dy for x + 2y = 1 ; 2x + y = 3.​

Answer 1

Answer:

x=5/3

y=-1/3

Step-by-step explanation:

x + 2y = 1

x=1-2y

now substitute in the equation 2x + y = 3,

we get

2(1-2y)+y=3

2-4y+y=3

2-3y=3

-3y=3-2

-3y=1

y=-1/3

now by substituting in 2x + y = 3 we get,

2x+(-1/3)=3

2x=3+1/3

2x=10/3

x=10/3*2

x=10/6

x=5/3