Question

3x+y is equals to 3 9x-3y is equals to 9 solve by substitution method

Answer 1

Hii friend,

3X+Y = 3.......(1)

9X-3Y = 9.......(2)

From equation (1) we get,

3X+Y = 3

3X = 3-Y

X = 3-Y/3........(3)

Putting the value of X in equation (2)

9X-3Y = 9

9× (3-Y/3) - 3Y = 9

3(3-Y) - 3Y = 9

9-3Y = 9

-3Y = 9-9

-3Y = 0

Y = 0/-3 = 0

Putting the value of Y in equation (3)

X = 3-Y/3

= 3-0/3 = 3/3 = 1

Hence,

X = 1 and Y = 0


HOPE IT HELPS!!!!!!

Answer 2

3x+y =3
y = 3-3x ---1equation
___________

9x-3y =9

Putting the value of y from equation 1

9x-3[3-3x] =9

9x-9+9x =9

18x =9+9

18x=18

x=18/18

x=1
______________
Putting the value of y in 1equation,

y =3-3x

y =3-3(1)

y =3-3

y =0


___________________

x=1
y=0


________________

I hope this will help you



-by ABHAY