Question

solve the following system algebraically using the substitution method.type the solution as an ordered pair

Answer 1

solve

`\begin{gathered} \begin{bmatrix}6x+7y=20 \\ y=2x\end{bmatrix} \\ substituting\text{ y } \\ 6x+7(2x)=20 \\ 6x+14x=20 \\ 20x=20 \\ (20x)/(20)=(20)/(20) \\ x=1 \end{gathered}`

and for y

`y=2(1)=2`

answer: (1,2)