Question

show that the system of equation 5x-10y=0 and x+y=3 has a unique solution also find the value of x and y

Answer 1

Answer:

ans is

5x -10y=0

x+y=3 ×5

5x-10y=0

-(5x+5y=15)

-15y=-15

y=1

x+y=3

x+1=3

x=3-1

x=2

Answer 2

Step-by-step explanation:

5x-10y=0

x+y=3

a1/a2 should not be equal to b1/b2

a1=5

a2=-10

b1=1

b2=1

-5/10 is not equal to 1

so this will give a unique solution

5x-10y=0

(x+y=0)10

5x-10y=0

10x+10y=30

15x=30

x=2

putting value of x in:

x+y=0

y=3-x

y=3-2

y=1