Question

3x - y=3:9x-3y=9 by using substitution method​

Answer 1

Answer:

The value of x is 0.

Step-by-step explanation:

The equation is: 9x - 3y = 9.

Compute the value of x when y = 3 as follows:

$9x-3y=9\\9x-(3\times3)=9\\9x-9=9\\9x=0\\x=0$

Thus, the value of x is 0.

Answer 2

Answer:

3X - Y = 3 ( Equ.1 )

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

Now , In Equ. 1

Y = 3X - 3 ( Substituting in equ. 2 )

9X - 3 ( 3X - 3 ) = 9

9X - 9X + 9 = 9

X = 0 ( Substituting in equ.1 )

0 - Y = 3

Y = -3

Hope it helps !!

Vishal. ❣