## Algebra 1

Multiply the second equation by -1. Add the equations. $9x+8y=15\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 9x+8y=\ \ \ 15$ $9x+8y=30\ \ \ \$multiply by -1$\ \ \ \ \ \ \ \ \ \ \underline{-9x-8y=-30}$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 0=-15$ Since this equation is not true, the system has no solution.