Question

Use elimination to solve eachsystem of equationsx + y = 52x + y = 4

Answer 1

Subtracting the first equation from the second one we get:

`2x+y-x-y=4-5.`

Adding like terms we get:

`x=-1.`

Substituting x=-1 in the first equation we get:

`-1+y=5.`

Adding 1 to the above equation we get:

`\begin{gathered} -1+y+1=-5+1, \\ y=6. \end{gathered}`

Answer:

`x=-1\text{ and y=6.}`