## Algebra 1

Add the two equations to eliminate x. $-x+5y=13$ $\underline{\ \ \ x-\ \ y=15}$ $\ \ \ \ \ \ \ \ \ \ \ 4y=28$ Solve for y. $4y=28$ $4y\div4=28\div4$ $y=7$ Substitute 7 for y in either equation and solve for x. $x-y=15$ $x-7=15$ $x-7+7=15+7$ $x=22$