Question

5x-y=-1 + -5x+3y=25 for two variable elimination quiz

Answer 1

`((11)/(5),12)`

Explanation:

The system is

5x-y=-1

-5x+3y=25

We the two equations to get:

`5x+-5x+-y+3y=25+-1`

We simplify t get

`2y=24`

We divide both sides by 2 to get:

`y=12`

We now substitute y=12 in to the top equation to get:

`5x-12=-1`

`5x=11`

`x=(11)/(5)`