Question

Solving equations by eliminationAlgebra

Answer 1

Given the following question:

`\begin{gathered} x-y=11 \\ 2x+y=19 \end{gathered}`
`\begin{gathered} x-y=11 \\ 2x+y=19 \\ x+2x=3x \\ -y+y=0 \\ 11+19=30 \\ 3x=30 \\ (3x)/(3)=x \\ (30)/(3)=10 \\ x=10 \\ \\ x-y=11 \\ x=10 \\ 10-y=11 \\ -y+10=11 \\ 10-10=0 \\ 11-10=1 \\ -y=1 \\ y=-1 \\ \end{gathered}`

x = 10

y = -1