Question

Use the method of subsitution to solve the sysytem of linear equations.

2x-y=3
7x-3y=13

Answer 1

2x-y = 3
=> y = 2x-3

Now, substitute this value of y in the second equation, and solve it -

7x - 3(2x-3) = 13

Answer 2

@Baldwin777

Start solving this and get x

Answer 3

okay so I would get 7x-6x-3=13 right?

Answer 4

No @Baldwin777

You need to know something

(-)(-)=+

(+)(-)=-

(+)(+)=+


So now i would recommend to do it again

7x - 3(2x-3) = 13


I am here so i can help :)

Answer 5

No, You tried well though!

How much is -3 x -3 ?