Question

I am having trouble understanding what im supposed to do, i can do the of the assignment if i can understand how to solve this thanks.
For information, the assignment is to Solve by substitution.

Answer 1

Answer: x=6 y=5

Step-by-step explanation:

Im pretty certain that what its saying is that y equals both equations therefore x-1=3x-13 from there you can find the answer that i will give as a double check to your work

to get the y you have to rearrange one of the equations the easiest being the second one you can rearrange it into x=y+1 then instead of changing the y like you did for x you substitute the x, since we know x=y+1 we can turn the top equation into y= 3(y+1)-13 which i believe you can solve just as a normal algebraic equation

Answer 2

Answer:

x = 6

y = 5

Step-by-step explanation:

Solving linear equations with Substitution method:

y = 3x - 13    ------------(i)

y = x - 1 --------------(ii)

Substitute y = x - 1 in equation (i),

     x - 1 = 3x - 13

Add 13 to both sides,

  x - 1 + 13 = 3x

     x + 12  = 3x

Subtract 'x' from both sides,

           12 = 3x - x

            2x = 12

Divide both sides by 2,

              x = 12 ÷ 2

               $\sf \boxed{\bf x = 6}$

Substitute x = 6 in equation (ii)

  y = 6 - 1

   $\boxed{\bf y = 5}$