## Precalculus: Mathematics for Calculus, 7th Edition

$x=1$ $y=4$
$2x-5y=-18\rightarrow$ Multiply by 3. $3x+4y=19\rightarrow$ Multiply by -2. $6x-15y=-54$ $-6x-8y=-38 \rightarrow$ Add the equations to eliminate x. $-23y=-92$ $y=4$ Substitute for y and solve for x. $2x=-18+20$ $x=1$