Question Type 1: Finding a unique solution to a system of equations algebraically using elimination or substitution Bootcamps

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$ and $y$:

Adult tickets cost $12 and child tickets cost $8. If $120$ tickets were sold for a total of $1200, solve for the numbers of adult tickets $x$ and child tickets $y$ using the system:

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$ and $y$:

Solve the system algebraically for $x$, $y$, and $z$:

Solve the system algebraically for $x$, $y$, and $z$:

Solve the system algebraically for $x$, $y$, and $z$:

Solve the system algebraically for $x$, $y$, and $z$: