Question

2. (06.01) If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation. 15x − y = −6 5x − 3y = −13 (1 point) 5(−15x − 6) − 3y = −13 5(15x + 6) − 3y = −13 5x − 3(15x + 6) = −13 5x − 3(−15x − 6) = −13

Answer 1

15x - y = -6......15x + 6 = y...now we sub this into the other equation and get :

5x - 3y = -13.....
5x - 3(15x + 6) = -13 <===

Answer 2

`5x - 3(15x+6)= -13`

Explanation:

`15x - y = -6`

`5x - 3y = -13`

Lets solve the first equation for y

`15x - y = -6`

Subtract 15x on both sides

`-y =-15x-6`

Divide by
`-1` on both sides

`y =15x+6`

now substitute y in the second equation

`5x - 3y = -13`

`5x - 3(15x+6)= -13`