Question

the solution set of x-3y=1 and 3x+y=3 is

Answer 1

hey mate!!

x-3y=1
x=1+3y


now, substituting the value of x in equation (2)

3(1+3y)+y=3
3+9y+y=3
10y=0
y=0
x=1+3y
x=1+0=1


hence x=1 and y=0


hope it helps!!

Answer 2

eq (2)×3

;9x+3y=9......ek(3)

eq (1)+(3)

;10x=10

;x=10/10=1

put x=1 in eq (1)

;1-3y=1

;-3y=1-1

-3y=0

;y=0

x=1 and y=0

is your answer